Implement Spanned to retrieve source locations on AST nodes (#1435)

Co-authored-by: Ifeanyi Ubah <ify1992@yahoo.com>
Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>

README.md

@@ -100,6 +100,23 @@ similar semantics are represented with the same AST. We welcome PRs to fix such
 issues and distinguish different syntaxes in the AST.
 
 
+## WIP: Extracting source locations from AST nodes
+
+This crate allows recovering source locations from AST nodes via the [Spanned](https://docs.rs/sqlparser/latest/sqlparser/ast/trait.Spanned.html) trait, which can be used for advanced diagnostics tooling. Note that this feature is a work in progress and many nodes report missing or inaccurate spans. Please see [this document](./docs/source_spans.md#source-span-contributing-guidelines) for information on how to contribute missing improvements.
+
+```rust
+use sqlparser::ast::Spanned;
+
+// Parse SQL
+let ast = Parser::parse_sql(&GenericDialect, "SELECT A FROM B").unwrap();
+
+// The source span can be retrieved with start and end locations
+assert_eq!(ast[0].span(), Span {
+  start: Location::of(1, 1),
+  end: Location::of(1, 16),
+});
+```
+
 ## SQL compliance
 
 SQL was first standardized in 1987, and revisions of the standard have been

docs/source_spans.md

@@ -0,0 +1,52 @@
+
+## Breaking Changes
+
+These are the current breaking changes introduced by the source spans feature:
+
+#### Added fields for spans (must be added to any existing pattern matches)
+- `Ident` now stores a `Span`
+- `Select`, `With`, `Cte`, `WildcardAdditionalOptions` now store a `TokenWithLocation` 
+
+#### Misc.
+- `TokenWithLocation` stores a full `Span`, rather than just a source location. Users relying on `token.location` should use `token.location.start` instead.
+## Source Span Contributing Guidelines
+
+For contributing source spans improvement in addition to the general [contribution guidelines](../README.md#contributing), please make sure to pay attention to the following:
+
+
+### Source Span Design Considerations
+
+- `Ident` always have correct source spans
+- Downstream breaking change impact is to be as minimal as possible
+- To this end, use recursive merging of spans in favor of storing spans on all nodes
+- Any metadata added to compute spans must not change semantics (Eq, Ord, Hash, etc.)
+
+The primary reason for missing and inaccurate source spans at this time is missing spans of keyword tokens and values in many structures, either due to lack of time or because adding them would break downstream significantly.  
+
+When considering adding support for source spans on a type, consider the impact to consumers of that type and whether your change would require a consumer to do non-trivial changes to their code.
+
+Example of a trivial change
+```rust
+match node {  
+  ast::Query { 
+    field1,
+    field2, 
+    location: _,  // add a new line to ignored location
+}
+```
+
+If adding source spans to a type would require a significant change like wrapping that type or similar, please open an issue to discuss. 
+
+### AST Node Equality and Hashes
+
+When adding tokens to AST nodes, make sure to store them using the [AttachedToken](https://docs.rs/sqlparser/latest/sqlparser/ast/helpers/struct.AttachedToken.html) helper to ensure that semantically equivalent AST nodes always compare as equal and hash to the same value. F.e. `select 5` and `SELECT 5` would compare as different `Select` nodes, if the select token was stored directly. f.e.
+
+```rust
+struct Select {
+    select_token: AttachedToken, // only used for spans
+    /// remaining fields
+    field1,
+    field2,
+    ...
+}
+```

src/ast/helpers/attached_token.rs

@@ -0,0 +1,82 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+use core::cmp::{Eq, Ord, Ordering, PartialEq, PartialOrd};
+use core::fmt::{self, Debug, Formatter};
+use core::hash::{Hash, Hasher};
+
+use crate::tokenizer::{Token, TokenWithLocation};
+
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
+#[cfg(feature = "visitor")]
+use sqlparser_derive::{Visit, VisitMut};
+
+/// A wrapper type for attaching tokens to AST nodes that should be ignored in comparisons and hashing.
+/// This should be used when a token is not relevant for semantics, but is still needed for
+/// accurate source location tracking.
+#[derive(Clone)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
+pub struct AttachedToken(pub TokenWithLocation);
+
+impl AttachedToken {
+    pub fn empty() -> Self {
+        AttachedToken(TokenWithLocation::wrap(Token::EOF))
+    }
+}
+
+// Conditional Implementations
+impl Debug for AttachedToken {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        self.0.fmt(f)
+    }
+}
+
+// Blanket Implementations
+impl PartialEq for AttachedToken {
+    fn eq(&self, _: &Self) -> bool {
+        true
+    }
+}
+
+impl Eq for AttachedToken {}
+
+impl PartialOrd for AttachedToken {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl Ord for AttachedToken {
+    fn cmp(&self, _: &Self) -> Ordering {
+        Ordering::Equal
+    }
+}
+
+impl Hash for AttachedToken {
+    fn hash<H: Hasher>(&self, _state: &mut H) {
+        // Do nothing
+    }
+}
+
+impl From<TokenWithLocation> for AttachedToken {
+    fn from(value: TokenWithLocation) -> Self {
+        AttachedToken(value)
+    }
+}

src/ast/helpers/mod.rs

@@ -14,5 +14,6 @@
 // KIND, either express or implied.  See the License for the
 // specific language governing permissions and limitations
 // under the License.
+pub mod attached_token;
 pub mod stmt_create_table;
 pub mod stmt_data_loading;

src/ast/mod.rs

@@ -23,9 +23,13 @@ use alloc::{
     string::{String, ToString},
     vec::Vec,
 };
+use helpers::attached_token::AttachedToken;
 
-use core::fmt::{self, Display};
 use core::ops::Deref;
+use core::{
+    fmt::{self, Display},
+    hash,
+};
 
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
@@ -33,6 +37,8 @@ use serde::{Deserialize, Serialize};
 #[cfg(feature = "visitor")]
 use sqlparser_derive::{Visit, VisitMut};
 
+use crate::tokenizer::Span;
+
 pub use self::data_type::{
     ArrayElemTypeDef, CharLengthUnits, CharacterLength, DataType, ExactNumberInfo,
     StructBracketKind, TimezoneInfo,
@@ -87,6 +93,9 @@ mod dml;
 pub mod helpers;
 mod operator;
 mod query;
+mod spans;
+pub use spans::Spanned;
+
 mod trigger;
 mod value;
 
@@ -131,7 +140,7 @@ where
 }
 
 /// An identifier, decomposed into its value or character data and the quote style.
-#[derive(Debug, Clone, PartialEq, PartialOrd, Eq, Ord, Hash)]
+#[derive(Debug, Clone, PartialOrd, Ord)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub struct Ident {
@@ -140,10 +149,41 @@ pub struct Ident {
     /// The starting quote if any. Valid quote characters are the single quote,
     /// double quote, backtick, and opening square bracket.
     pub quote_style: Option<char>,
+    /// The span of the identifier in the original SQL string.
+    pub span: Span,
 }
 
+impl PartialEq for Ident {
+    fn eq(&self, other: &Self) -> bool {
+        let Ident {
+            value,
+            quote_style,
+            // exhaustiveness check; we ignore spans in comparisons
+            span: _,
+        } = self;
+
+        value == &other.value && quote_style == &other.quote_style
+    }
+}
+
+impl core::hash::Hash for Ident {
+    fn hash<H: hash::Hasher>(&self, state: &mut H) {
+        let Ident {
+            value,
+            quote_style,
+            // exhaustiveness check; we ignore spans in hashes
+            span: _,
+        } = self;
+
+        value.hash(state);
+        quote_style.hash(state);
+    }
+}
+
+impl Eq for Ident {}
+
 impl Ident {
-    /// Create a new identifier with the given value and no quotes.
+    /// Create a new identifier with the given value and no quotes and an empty span.
     pub fn new<S>(value: S) -> Self
     where
         S: Into<String>,
@@ -151,6 +191,7 @@ impl Ident {
         Ident {
             value: value.into(),
             quote_style: None,
+            span: Span::empty(),
         }
     }
 
@@ -164,6 +205,30 @@ impl Ident {
         Ident {
             value: value.into(),
             quote_style: Some(quote),
+            span: Span::empty(),
+        }
+    }
+
+    pub fn with_span<S>(span: Span, value: S) -> Self
+    where
+        S: Into<String>,
+    {
+        Ident {
+            value: value.into(),
+            quote_style: None,
+            span,
+        }
+    }
+
+    pub fn with_quote_and_span<S>(quote: char, span: Span, value: S) -> Self
+    where
+        S: Into<String>,
+    {
+        assert!(quote == '\'' || quote == '"' || quote == '`' || quote == '[');
+        Ident {
+            value: value.into(),
+            quote_style: Some(quote),
+            span,
         }
     }
 }
@@ -173,6 +238,7 @@ impl From<&str> for Ident {
         Ident {
             value: value.to_string(),
             quote_style: None,
+            span: Span::empty(),
         }
     }
 }
@@ -919,10 +985,10 @@ pub enum Expr {
         /// `<search modifier>`
         opt_search_modifier: Option<SearchModifier>,
     },
-    Wildcard,
+    Wildcard(AttachedToken),
     /// Qualified wildcard, e.g. `alias.*` or `schema.table.*`.
     /// (Same caveats apply to `QualifiedWildcard` as to `Wildcard`.)
-    QualifiedWildcard(ObjectName),
+    QualifiedWildcard(ObjectName, AttachedToken),
     /// Some dialects support an older syntax for outer joins where columns are
     /// marked with the `(+)` operator in the WHERE clause, for example:
     ///
@@ -1211,8 +1277,8 @@ impl fmt::Display for Expr {
             Expr::MapAccess { column, keys } => {
                 write!(f, "{column}{}", display_separated(keys, ""))
             }
-            Expr::Wildcard => f.write_str("*"),
-            Expr::QualifiedWildcard(prefix) => write!(f, "{}.*", prefix),
+            Expr::Wildcard(_) => f.write_str("*"),
+            Expr::QualifiedWildcard(prefix, _) => write!(f, "{}.*", prefix),
             Expr::CompoundIdentifier(s) => write!(f, "{}", display_separated(s, ".")),
             Expr::IsTrue(ast) => write!(f, "{ast} IS TRUE"),
             Expr::IsNotTrue(ast) => write!(f, "{ast} IS NOT TRUE"),
@@ -5432,8 +5498,8 @@ pub enum FunctionArgExpr {
 impl From<Expr> for FunctionArgExpr {
     fn from(wildcard_expr: Expr) -> Self {
         match wildcard_expr {
-            Expr::QualifiedWildcard(prefix) => Self::QualifiedWildcard(prefix),
-            Expr::Wildcard => Self::Wildcard,
+            Expr::QualifiedWildcard(prefix, _) => Self::QualifiedWildcard(prefix),
+            Expr::Wildcard(_) => Self::Wildcard,
             expr => Self::Expr(expr),
         }
     }

src/ast/query.rs

@@ -18,13 +18,17 @@
 #[cfg(not(feature = "std"))]
 use alloc::{boxed::Box, vec::Vec};
 
+use helpers::attached_token::AttachedToken;
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
 
 #[cfg(feature = "visitor")]
 use sqlparser_derive::{Visit, VisitMut};
 
-use crate::ast::*;
+use crate::{
+    ast::*,
+    tokenizer::{Token, TokenWithLocation},
+};
 
 /// The most complete variant of a `SELECT` query expression, optionally
 /// including `WITH`, `UNION` / other set operations, and `ORDER BY`.
@@ -276,6 +280,8 @@ impl fmt::Display for Table {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub struct Select {
+    /// Token for the `SELECT` keyword
+    pub select_token: AttachedToken,
     pub distinct: Option<Distinct>,
     /// MSSQL syntax: `TOP (<N>) [ PERCENT ] [ WITH TIES ]`
     pub top: Option<Top>,
@@ -505,6 +511,8 @@ impl fmt::Display for NamedWindowDefinition {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub struct With {
+    // Token for the "WITH" keyword
+    pub with_token: AttachedToken,
     pub recursive: bool,
     pub cte_tables: Vec<Cte>,
 }
@@ -556,6 +564,8 @@ pub struct Cte {
     pub query: Box<Query>,
     pub from: Option<Ident>,
     pub materialized: Option<CteAsMaterialized>,
+    // Token for the closing parenthesis
+    pub closing_paren_token: AttachedToken,
 }
 
 impl fmt::Display for Cte {
@@ -607,10 +617,12 @@ impl fmt::Display for IdentWithAlias {
 }
 
 /// Additional options for wildcards, e.g. Snowflake `EXCLUDE`/`RENAME` and Bigquery `EXCEPT`.
-#[derive(Debug, Clone, PartialEq, PartialOrd, Eq, Ord, Hash, Default)]
+#[derive(Debug, Clone, PartialEq, PartialOrd, Eq, Ord, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub struct WildcardAdditionalOptions {
+    /// The wildcard token `*`
+    pub wildcard_token: AttachedToken,
     /// `[ILIKE...]`.
     ///  Snowflake syntax: <https://docs.snowflake.com/en/sql-reference/sql/select#parameters>
     pub opt_ilike: Option<IlikeSelectItem>,
@@ -628,6 +640,19 @@ pub struct WildcardAdditionalOptions {
     pub opt_rename: Option<RenameSelectItem>,
 }
 
+impl Default for WildcardAdditionalOptions {
+    fn default() -> Self {
+        Self {
+            wildcard_token: TokenWithLocation::wrap(Token::Mul).into(),
+            opt_ilike: None,
+            opt_exclude: None,
+            opt_except: None,
+            opt_replace: None,
+            opt_rename: None,
+        }
+    }
+}
+
 impl fmt::Display for WildcardAdditionalOptions {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         if let Some(ilike) = &self.opt_ilike {

src/parser/mod.rs

@@ -24,6 +24,7 @@ use core::{
     fmt::{self, Display},
     str::FromStr,
 };
+use helpers::attached_token::AttachedToken;
 
 use log::debug;
 
@@ -371,7 +372,7 @@ impl<'a> Parser<'a> {
             .into_iter()
             .map(|token| TokenWithLocation {
                 token,
-                location: Location { line: 0, column: 0 },
+                span: Span::empty(),
             })
             .collect();
         self.with_tokens_with_locations(tokens_with_locations)
@@ -613,7 +614,7 @@ impl<'a> Parser<'a> {
         let mut export = false;
 
         if !dialect_of!(self is MySqlDialect | GenericDialect) {
-            return parser_err!("Unsupported statement FLUSH", self.peek_token().location);
+            return parser_err!("Unsupported statement FLUSH", self.peek_token().span.start);
         }
 
         let location = if self.parse_keyword(Keyword::NO_WRITE_TO_BINLOG) {
@@ -914,7 +915,7 @@ impl<'a> Parser<'a> {
             t @ (Token::Word(_) | Token::SingleQuotedString(_)) => {
                 if self.peek_token().token == Token::Period {
                     let mut id_parts: Vec<Ident> = vec![match t {
-                        Token::Word(w) => w.to_ident(),
+                        Token::Word(w) => w.to_ident(next_token.span),
                         Token::SingleQuotedString(s) => Ident::with_quote('\'', s),
                         _ => unreachable!(), // We matched above
                     }];
@@ -922,13 +923,16 @@ impl<'a> Parser<'a> {
                     while self.consume_token(&Token::Period) {
                         let next_token = self.next_token();
                         match next_token.token {
-                            Token::Word(w) => id_parts.push(w.to_ident()),
+                            Token::Word(w) => id_parts.push(w.to_ident(next_token.span)),
                             Token::SingleQuotedString(s) => {
                                 // SQLite has single-quoted identifiers
                                 id_parts.push(Ident::with_quote('\'', s))
                             }
                             Token::Mul => {
-                                return Ok(Expr::QualifiedWildcard(ObjectName(id_parts)));
+                                return Ok(Expr::QualifiedWildcard(
+                                    ObjectName(id_parts),
+                                    AttachedToken(next_token),
+                                ));
                             }
                             _ => {
                                 return self
@@ -939,7 +943,7 @@ impl<'a> Parser<'a> {
                 }
             }
             Token::Mul => {
-                return Ok(Expr::Wildcard);
+                return Ok(Expr::Wildcard(AttachedToken(next_token)));
             }
             _ => (),
         };
@@ -1002,7 +1006,7 @@ impl<'a> Parser<'a> {
 
     pub fn parse_unlisten(&mut self) -> Result<Statement, ParserError> {
         let channel = if self.consume_token(&Token::Mul) {
-            Ident::new(Expr::Wildcard.to_string())
+            Ident::new(Expr::Wildcard(AttachedToken::empty()).to_string())
         } else {
             match self.parse_identifier(false) {
                 Ok(expr) => expr,
@@ -1030,6 +1034,7 @@ impl<'a> Parser<'a> {
     fn parse_expr_prefix_by_reserved_word(
         &mut self,
         w: &Word,
+        w_span: Span,
     ) -> Result<Option<Expr>, ParserError> {
         match w.keyword {
             Keyword::TRUE | Keyword::FALSE if self.dialect.supports_boolean_literals() => {
@@ -1047,7 +1052,7 @@ impl<'a> Parser<'a> {
                 if dialect_of!(self is PostgreSqlDialect | GenericDialect) =>
             {
                 Ok(Some(Expr::Function(Function {
-                    name: ObjectName(vec![w.to_ident()]),
+                    name: ObjectName(vec![w.to_ident(w_span)]),
                     parameters: FunctionArguments::None,
                     args: FunctionArguments::None,
                     null_treatment: None,
@@ -1061,7 +1066,7 @@ impl<'a> Parser<'a> {
             | Keyword::CURRENT_DATE
             | Keyword::LOCALTIME
             | Keyword::LOCALTIMESTAMP => {
-                Ok(Some(self.parse_time_functions(ObjectName(vec![w.to_ident()]))?))
+                Ok(Some(self.parse_time_functions(ObjectName(vec![w.to_ident(w_span)]))?))
             }
             Keyword::CASE => Ok(Some(self.parse_case_expr()?)),
             Keyword::CONVERT => Ok(Some(self.parse_convert_expr(false)?)),
@@ -1086,7 +1091,7 @@ impl<'a> Parser<'a> {
             Keyword::CEIL => Ok(Some(self.parse_ceil_floor_expr(true)?)),
             Keyword::FLOOR => Ok(Some(self.parse_ceil_floor_expr(false)?)),
             Keyword::POSITION if self.peek_token().token == Token::LParen => {
-                Ok(Some(self.parse_position_expr(w.to_ident())?))
+                Ok(Some(self.parse_position_expr(w.to_ident(w_span))?))
             }
             Keyword::SUBSTRING => Ok(Some(self.parse_substring_expr()?)),
             Keyword::OVERLAY => Ok(Some(self.parse_overlay_expr()?)),
@@ -1105,7 +1110,7 @@ impl<'a> Parser<'a> {
                 let query = self.parse_query()?;
                 self.expect_token(&Token::RParen)?;
                 Ok(Some(Expr::Function(Function {
-                    name: ObjectName(vec![w.to_ident()]),
+                    name: ObjectName(vec![w.to_ident(w_span)]),
                     parameters: FunctionArguments::None,
                     args: FunctionArguments::Subquery(query),
                     filter: None,
@@ -1134,20 +1139,24 @@ impl<'a> Parser<'a> {
     }
 
     // Tries to parse an expression by a word that is not known to have a special meaning in the dialect.
-    fn parse_expr_prefix_by_unreserved_word(&mut self, w: &Word) -> Result<Expr, ParserError> {
+    fn parse_expr_prefix_by_unreserved_word(
+        &mut self,
+        w: &Word,
+        w_span: Span,
+    ) -> Result<Expr, ParserError> {
         match self.peek_token().token {
             Token::LParen | Token::Period => {
-                let mut id_parts: Vec<Ident> = vec![w.to_ident()];
-                let mut ends_with_wildcard = false;
+                let mut id_parts: Vec<Ident> = vec![w.to_ident(w_span)];
+                let mut ending_wildcard: Option<TokenWithLocation> = None;
                 while self.consume_token(&Token::Period) {
                     let next_token = self.next_token();
                     match next_token.token {
-                        Token::Word(w) => id_parts.push(w.to_ident()),
+                        Token::Word(w) => id_parts.push(w.to_ident(next_token.span)),
                         Token::Mul => {
                             // Postgres explicitly allows funcnm(tablenm.*) and the
                             // function array_agg traverses this control flow
                             if dialect_of!(self is PostgreSqlDialect) {
-                                ends_with_wildcard = true;
+                                ending_wildcard = Some(next_token);
                                 break;
                             } else {
                                 return self.expected("an identifier after '.'", next_token);
@@ -1160,8 +1169,11 @@ impl<'a> Parser<'a> {
                     }
                 }
 
-                if ends_with_wildcard {
-                    Ok(Expr::QualifiedWildcard(ObjectName(id_parts)))
+                if let Some(wildcard_token) = ending_wildcard {
+                    Ok(Expr::QualifiedWildcard(
+                        ObjectName(id_parts),
+                        AttachedToken(wildcard_token),
+                    ))
                 } else if self.consume_token(&Token::LParen) {
                     if dialect_of!(self is SnowflakeDialect | MsSqlDialect)
                         && self.consume_tokens(&[Token::Plus, Token::RParen])
@@ -1194,11 +1206,11 @@ impl<'a> Parser<'a> {
             Token::Arrow if self.dialect.supports_lambda_functions() => {
                 self.expect_token(&Token::Arrow)?;
                 Ok(Expr::Lambda(LambdaFunction {
-                    params: OneOrManyWithParens::One(w.to_ident()),
+                    params: OneOrManyWithParens::One(w.to_ident(w_span)),
                     body: Box::new(self.parse_expr()?),
                 }))
             }
-            _ => Ok(Expr::Identifier(w.to_ident())),
+            _ => Ok(Expr::Identifier(w.to_ident(w_span))),
         }
     }
 
@@ -1225,7 +1237,7 @@ impl<'a> Parser<'a> {
         // Note also that naively `SELECT date` looks like a syntax error because the `date` type
         // name is not followed by a string literal, but in fact in PostgreSQL it is a valid
         // expression that should parse as the column name "date".
-        let loc = self.peek_token().location;
+        let loc = self.peek_token().span.start;
         let opt_expr = self.maybe_parse(|parser| {
             match parser.parse_data_type()? {
                 DataType::Interval => parser.parse_interval(),
@@ -1259,12 +1271,14 @@ impl<'a> Parser<'a> {
                 //
                 // We first try to parse the word and following tokens as a special expression, and if that fails,
                 // we rollback and try to parse it as an identifier.
-                match self.try_parse(|parser| parser.parse_expr_prefix_by_reserved_word(&w)) {
+                match self.try_parse(|parser| {
+                    parser.parse_expr_prefix_by_reserved_word(&w, next_token.span)
+                }) {
                     // This word indicated an expression prefix and parsing was successful
                     Ok(Some(expr)) => Ok(expr),
 
                     // No expression prefix associated with this word
-                    Ok(None) => Ok(self.parse_expr_prefix_by_unreserved_word(&w)?),
+                    Ok(None) => Ok(self.parse_expr_prefix_by_unreserved_word(&w, next_token.span)?),
 
                     // If parsing of the word as a special expression failed, we are facing two options:
                     // 1. The statement is malformed, e.g. `SELECT INTERVAL '1 DAI` (`DAI` instead of `DAY`)
@@ -1275,7 +1289,7 @@ impl<'a> Parser<'a> {
                     Err(e) => {
                         if !self.dialect.is_reserved_for_identifier(w.keyword) {
                             if let Ok(Some(expr)) = self.maybe_parse(|parser| {
-                                parser.parse_expr_prefix_by_unreserved_word(&w)
+                                parser.parse_expr_prefix_by_unreserved_word(&w, next_token.span)
                             }) {
                                 return Ok(expr);
                             }
@@ -1377,11 +1391,11 @@ impl<'a> Parser<'a> {
                 } else {
                     let tok = self.next_token();
                     let key = match tok.token {
-                        Token::Word(word) => word.to_ident(),
+                        Token::Word(word) => word.to_ident(tok.span),
                         _ => {
                             return parser_err!(
                                 format!("Expected identifier, found: {tok}"),
-                                tok.location
+                                tok.span.start
                             )
                         }
                     };
@@ -1471,7 +1485,7 @@ impl<'a> Parser<'a> {
             while p.consume_token(&Token::Period) {
                 let tok = p.next_token();
                 let name = match tok.token {
-                    Token::Word(word) => word.to_ident(),
+                    Token::Word(word) => word.to_ident(tok.span),
                     _ => return p.expected("identifier", tok),
                 };
                 let func = match p.parse_function(ObjectName(vec![name]))? {
@@ -2290,7 +2304,7 @@ impl<'a> Parser<'a> {
         } else if self.dialect.require_interval_qualifier() {
             return parser_err!(
                 "INTERVAL requires a unit after the literal value",
-                self.peek_token().location
+                self.peek_token().span.start
             );
         } else {
             None
@@ -2381,7 +2395,10 @@ impl<'a> Parser<'a> {
         let (fields, trailing_bracket) =
             self.parse_struct_type_def(Self::parse_struct_field_def)?;
         if trailing_bracket.0 {
-            return parser_err!("unmatched > in STRUCT literal", self.peek_token().location);
+            return parser_err!(
+                "unmatched > in STRUCT literal",
+                self.peek_token().span.start
+            );
         }
 
         self.expect_token(&Token::LParen)?;
@@ -2411,7 +2428,7 @@ impl<'a> Parser<'a> {
             if typed_syntax {
                 return parser_err!("Typed syntax does not allow AS", {
                     self.prev_token();
-                    self.peek_token().location
+                    self.peek_token().span.start
                 });
             }
             let field_name = self.parse_identifier(false)?;
@@ -2464,7 +2481,7 @@ impl<'a> Parser<'a> {
             // we've matched all field types for the current struct.
             // e.g. this is invalid syntax `STRUCT<STRUCT<INT>>>, INT>(NULL)`
             if trailing_bracket.0 {
-                return parser_err!("unmatched > in STRUCT definition", start_token.location);
+                return parser_err!("unmatched > in STRUCT definition", start_token.span.start);
             }
         };
 
@@ -2833,7 +2850,7 @@ impl<'a> Parser<'a> {
                         format!(
                         "Expected one of [=, >, <, =>, =<, !=] as comparison operator, found: {op}"
                     ),
-                        tok.location
+                        tok.span.start
                     );
                 };
 
@@ -2959,7 +2976,7 @@ impl<'a> Parser<'a> {
                 // Can only happen if `get_next_precedence` got out of sync with this function
                 _ => parser_err!(
                     format!("No infix parser for token {:?}", tok.token),
-                    tok.location
+                    tok.span.start
                 ),
             }
         } else if Token::DoubleColon == tok {
@@ -2990,7 +3007,7 @@ impl<'a> Parser<'a> {
             // Can only happen if `get_next_precedence` got out of sync with this function
             parser_err!(
                 format!("No infix parser for token {:?}", tok.token),
-                tok.location
+                tok.span.start
             )
         }
     }
@@ -3298,14 +3315,14 @@ impl<'a> Parser<'a> {
             index += 1;
             if let Some(TokenWithLocation {
                 token: Token::Whitespace(_),
-                location: _,
+                span: _,
             }) = token
             {
                 continue;
             }
             break token.cloned().unwrap_or(TokenWithLocation {
                 token: Token::EOF,
-                location: Location { line: 0, column: 0 },
+                span: Span::empty(),
             });
         })
     }
@@ -3318,13 +3335,13 @@ impl<'a> Parser<'a> {
             match self.tokens.get(index - 1) {
                 Some(TokenWithLocation {
                     token: Token::Whitespace(_),
-                    location: _,
+                    span: _,
                 }) => continue,
                 non_whitespace => {
                     if n == 0 {
                         return non_whitespace.cloned().unwrap_or(TokenWithLocation {
                             token: Token::EOF,
-                            location: Location { line: 0, column: 0 },
+                            span: Span::empty(),
                         });
                     }
                     n -= 1;
@@ -3346,18 +3363,10 @@ impl<'a> Parser<'a> {
             .cloned()
             .unwrap_or(TokenWithLocation {
                 token: Token::EOF,
-                location: Location { line: 0, column: 0 },
+                span: Span::empty(),
             })
     }
 
-    /// Look for all of the expected keywords in sequence, without consuming them
-    fn peek_keyword(&mut self, expected: Keyword) -> bool {
-        let index = self.index;
-        let matched = self.parse_keyword(expected);
-        self.index = index;
-        matched
-    }
-
     /// Look for all of the expected keywords in sequence, without consuming them
     fn peek_keywords(&mut self, expected: &[Keyword]) -> bool {
         let index = self.index;
@@ -3375,7 +3384,7 @@ impl<'a> Parser<'a> {
             match self.tokens.get(self.index - 1) {
                 Some(TokenWithLocation {
                     token: Token::Whitespace(_),
-                    location: _,
+                    span: _,
                 }) => continue,
                 token => {
                     return token
@@ -3401,7 +3410,7 @@ impl<'a> Parser<'a> {
             self.index -= 1;
             if let Some(TokenWithLocation {
                 token: Token::Whitespace(_),
-                location: _,
+                span: _,
             }) = self.tokens.get(self.index)
             {
                 continue;
@@ -3414,7 +3423,7 @@ impl<'a> Parser<'a> {
     pub fn expected<T>(&self, expected: &str, found: TokenWithLocation) -> Result<T, ParserError> {
         parser_err!(
             format!("Expected: {expected}, found: {found}"),
-            found.location
+            found.span.start
         )
     }
 
@@ -3422,15 +3431,22 @@ impl<'a> Parser<'a> {
     /// true. Otherwise, no tokens are consumed and returns false.
     #[must_use]
     pub fn parse_keyword(&mut self, expected: Keyword) -> bool {
+        self.parse_keyword_token(expected).is_some()
+    }
+
+    #[must_use]
+    pub fn parse_keyword_token(&mut self, expected: Keyword) -> Option<TokenWithLocation> {
         match self.peek_token().token {
-            Token::Word(w) if expected == w.keyword => {
-                self.next_token();
-                true
-            }
-            _ => false,
+            Token::Word(w) if expected == w.keyword => Some(self.next_token()),
+            _ => None,
         }
     }
 
+    #[must_use]
+    pub fn peek_keyword(&mut self, expected: Keyword) -> bool {
+        matches!(self.peek_token().token, Token::Word(w) if expected == w.keyword)
+    }
+
     /// If the current token is the `expected` keyword followed by
     /// specified tokens, consume them and returns true.
     /// Otherwise, no tokens are consumed and returns false.
@@ -3508,9 +3524,9 @@ impl<'a> Parser<'a> {
 
     /// If the current token is the `expected` keyword, consume the token.
     /// Otherwise, return an error.
-    pub fn expect_keyword(&mut self, expected: Keyword) -> Result<(), ParserError> {
-        if self.parse_keyword(expected) {
-            Ok(())
+    pub fn expect_keyword(&mut self, expected: Keyword) -> Result<TokenWithLocation, ParserError> {
+        if let Some(token) = self.parse_keyword_token(expected) {
+            Ok(token)
         } else {
             self.expected(format!("{:?}", &expected).as_str(), self.peek_token())
         }
@@ -3552,9 +3568,9 @@ impl<'a> Parser<'a> {
     }
 
     /// Bail out if the current token is not an expected keyword, or consume it if it is
-    pub fn expect_token(&mut self, expected: &Token) -> Result<(), ParserError> {
-        if self.consume_token(expected) {
-            Ok(())
+    pub fn expect_token(&mut self, expected: &Token) -> Result<TokenWithLocation, ParserError> {
+        if self.peek_token() == *expected {
+            Ok(self.next_token())
         } else {
             self.expected(&expected.to_string(), self.peek_token())
         }
@@ -3749,7 +3765,7 @@ impl<'a> Parser<'a> {
     /// Parse either `ALL`, `DISTINCT` or `DISTINCT ON (...)`. Returns [`None`] if `ALL` is parsed
     /// and results in a [`ParserError`] if both `ALL` and `DISTINCT` are found.
     pub fn parse_all_or_distinct(&mut self) -> Result<Option<Distinct>, ParserError> {
-        let loc = self.peek_token().location;
+        let loc = self.peek_token().span.start;
         let all = self.parse_keyword(Keyword::ALL);
         let distinct = self.parse_keyword(Keyword::DISTINCT);
         if !distinct {
@@ -4828,7 +4844,7 @@ impl<'a> Parser<'a> {
             let loc = self
                 .tokens
                 .get(self.index - 1)
-                .map_or(Location { line: 0, column: 0 }, |t| t.location);
+                .map_or(Location { line: 0, column: 0 }, |t| t.span.start);
             match keyword {
                 Keyword::AUTHORIZATION => {
                     if authorization_owner.is_some() {
@@ -5138,7 +5154,7 @@ impl<'a> Parser<'a> {
         let if_exists = self.parse_keywords(&[Keyword::IF, Keyword::EXISTS]);
         let names = self.parse_comma_separated(|p| p.parse_object_name(false))?;
 
-        let loc = self.peek_token().location;
+        let loc = self.peek_token().span.start;
         let cascade = self.parse_keyword(Keyword::CASCADE);
         let restrict = self.parse_keyword(Keyword::RESTRICT);
         let purge = self.parse_keyword(Keyword::PURGE);
@@ -6029,7 +6045,7 @@ impl<'a> Parser<'a> {
             let _ = self.consume_token(&Token::Eq);
             let next_token = self.next_token();
             match next_token.token {
-                Token::Number(s, _) => Some(Self::parse::<u32>(s, next_token.location)?),
+                Token::Number(s, _) => Some(Self::parse::<u32>(s, next_token.span.start)?),
                 _ => self.expected("literal int", next_token)?,
             }
         } else {
@@ -6818,7 +6834,7 @@ impl<'a> Parser<'a> {
                         "FULLTEXT or SPATIAL option without constraint name",
                         TokenWithLocation {
                             token: Token::make_keyword(&name.to_string()),
-                            location: next_token.location,
+                            span: next_token.span,
                         },
                     );
                 }
@@ -7527,7 +7543,7 @@ impl<'a> Parser<'a> {
                 Expr::Function(f) => Ok(Statement::Call(f)),
                 other => parser_err!(
                     format!("Expected a simple procedure call but found: {other}"),
-                    self.peek_token().location
+                    self.peek_token().span.start
                 ),
             }
         } else {
@@ -7731,7 +7747,7 @@ impl<'a> Parser<'a> {
             let loc = self
                 .tokens
                 .get(self.index - 1)
-                .map_or(Location { line: 0, column: 0 }, |t| t.location);
+                .map_or(Location { line: 0, column: 0 }, |t| t.span.start);
             return parser_err!(format!("Expect a char, found {s:?}"), loc);
         }
         Ok(s.chars().next().unwrap())
@@ -7777,7 +7793,7 @@ impl<'a> Parser<'a> {
     /// Parse a literal value (numbers, strings, date/time, booleans)
     pub fn parse_value(&mut self) -> Result<Value, ParserError> {
         let next_token = self.next_token();
-        let location = next_token.location;
+        let span = next_token.span;
         match next_token.token {
             Token::Word(w) => match w.keyword {
                 Keyword::TRUE if self.dialect.supports_boolean_literals() => {
@@ -7794,7 +7810,7 @@ impl<'a> Parser<'a> {
                         "A value?",
                         TokenWithLocation {
                             token: Token::Word(w),
-                            location,
+                            span,
                         },
                     )?,
                 },
@@ -7802,14 +7818,14 @@ impl<'a> Parser<'a> {
                     "a concrete value",
                     TokenWithLocation {
                         token: Token::Word(w),
-                        location,
+                        span,
                     },
                 ),
             },
             // The call to n.parse() returns a bigdecimal when the
             // bigdecimal feature is enabled, and is otherwise a no-op
             // (i.e., it returns the input string).
-            Token::Number(n, l) => Ok(Value::Number(Self::parse(n, location)?, l)),
+            Token::Number(n, l) => Ok(Value::Number(Self::parse(n, span.start)?, l)),
             Token::SingleQuotedString(ref s) => Ok(Value::SingleQuotedString(s.to_string())),
             Token::DoubleQuotedString(ref s) => Ok(Value::DoubleQuotedString(s.to_string())),
             Token::TripleSingleQuotedString(ref s) => {
@@ -7853,7 +7869,7 @@ impl<'a> Parser<'a> {
                 // This because snowflake allows numbers as placeholders
                 let next_token = self.next_token();
                 let ident = match next_token.token {
-                    Token::Word(w) => Ok(w.to_ident()),
+                    Token::Word(w) => Ok(w.to_ident(next_token.span)),
                     Token::Number(w, false) => Ok(Ident::new(w)),
                     _ => self.expected("placeholder", next_token),
                 }?;
@@ -7864,7 +7880,7 @@ impl<'a> Parser<'a> {
                 "a value",
                 TokenWithLocation {
                     token: unexpected,
-                    location,
+                    span,
                 },
             ),
         }
@@ -7904,7 +7920,7 @@ impl<'a> Parser<'a> {
 
     fn parse_introduced_string_value(&mut self) -> Result<Value, ParserError> {
         let next_token = self.next_token();
-        let location = next_token.location;
+        let span = next_token.span;
         match next_token.token {
             Token::SingleQuotedString(ref s) => Ok(Value::SingleQuotedString(s.to_string())),
             Token::DoubleQuotedString(ref s) => Ok(Value::DoubleQuotedString(s.to_string())),
@@ -7913,7 +7929,7 @@ impl<'a> Parser<'a> {
                 "a string value",
                 TokenWithLocation {
                     token: unexpected,
-                    location,
+                    span,
                 },
             ),
         }
@@ -7923,7 +7939,7 @@ impl<'a> Parser<'a> {
     pub fn parse_literal_uint(&mut self) -> Result<u64, ParserError> {
         let next_token = self.next_token();
         match next_token.token {
-            Token::Number(s, _) => Self::parse::<u64>(s, next_token.location),
+            Token::Number(s, _) => Self::parse::<u64>(s, next_token.span.start),
             _ => self.expected("literal int", next_token),
         }
     }
@@ -8322,7 +8338,7 @@ impl<'a> Parser<'a> {
             // (For example, in `FROM t1 JOIN` the `JOIN` will always be parsed as a keyword,
             // not an alias.)
             Token::Word(w) if after_as || !reserved_kwds.contains(&w.keyword) => {
-                Ok(Some(w.to_ident()))
+                Ok(Some(w.to_ident(next_token.span)))
             }
             // MSSQL supports single-quoted strings as aliases for columns
             // We accept them as table aliases too, although MSSQL does not.
@@ -8392,7 +8408,7 @@ impl<'a> Parser<'a> {
                         _ => {
                             return parser_err!(
                                 "BUG: expected to match GroupBy modifier keyword",
-                                self.peek_token().location
+                                self.peek_token().span.start
                             )
                         }
                     });
@@ -8455,6 +8471,7 @@ impl<'a> Parser<'a> {
                         .map(|value| Ident {
                             value: value.into(),
                             quote_style: ident.quote_style,
+                            span: ident.span,
                         })
                         .collect::<Vec<_>>()
                 })
@@ -8470,7 +8487,7 @@ impl<'a> Parser<'a> {
         loop {
             match self.peek_token().token {
                 Token::Word(w) => {
-                    idents.push(w.to_ident());
+                    idents.push(w.to_ident(self.peek_token().span));
                 }
                 Token::EOF | Token::Eq => break,
                 _ => {}
@@ -8523,8 +8540,9 @@ impl<'a> Parser<'a> {
         let mut idents = vec![];
 
         // expecting at least one word for identifier
-        match self.next_token().token {
-            Token::Word(w) => idents.push(w.to_ident()),
+        let next_token = self.next_token();
+        match next_token.token {
+            Token::Word(w) => idents.push(w.to_ident(next_token.span)),
             Token::EOF => {
                 return Err(ParserError::ParserError(
                     "Empty input when parsing identifier".to_string(),
@@ -8541,19 +8559,22 @@ impl<'a> Parser<'a> {
         loop {
             match self.next_token().token {
                 // ensure that optional period is succeeded by another identifier
-                Token::Period => match self.next_token().token {
-                    Token::Word(w) => idents.push(w.to_ident()),
-                    Token::EOF => {
-                        return Err(ParserError::ParserError(
-                            "Trailing period in identifier".to_string(),
-                        ))?
+                Token::Period => {
+                    let next_token = self.next_token();
+                    match next_token.token {
+                        Token::Word(w) => idents.push(w.to_ident(next_token.span)),
+                        Token::EOF => {
+                            return Err(ParserError::ParserError(
+                                "Trailing period in identifier".to_string(),
+                            ))?
+                        }
+                        token => {
+                            return Err(ParserError::ParserError(format!(
+                                "Unexpected token following period in identifier: {token}"
+                            )))?
+                        }
                     }
-                    token => {
-                        return Err(ParserError::ParserError(format!(
-                            "Unexpected token following period in identifier: {token}"
-                        )))?
-                    }
-                },
+                }
                 Token::EOF => break,
                 token => {
                     return Err(ParserError::ParserError(format!(
@@ -8575,7 +8596,7 @@ impl<'a> Parser<'a> {
         let next_token = self.next_token();
         match next_token.token {
             Token::Word(w) => {
-                let mut ident = w.to_ident();
+                let mut ident = w.to_ident(next_token.span);
 
                 // On BigQuery, hyphens are permitted in unquoted identifiers inside of a FROM or
                 // TABLE clause [0].
@@ -9006,8 +9027,9 @@ impl<'a> Parser<'a> {
     /// expect the initial keyword to be already consumed
     pub fn parse_query(&mut self) -> Result<Box<Query>, ParserError> {
         let _guard = self.recursion_counter.try_decrease()?;
-        let with = if self.parse_keyword(Keyword::WITH) {
+        let with = if let Some(with_token) = self.parse_keyword_token(Keyword::WITH) {
             Some(With {
+                with_token: with_token.into(),
                 recursive: self.parse_keyword(Keyword::RECURSIVE),
                 cte_tables: self.parse_comma_separated(Parser::parse_cte)?,
             })
@@ -9265,8 +9287,10 @@ impl<'a> Parser<'a> {
                 }
             }
             self.expect_token(&Token::LParen)?;
+
             let query = self.parse_query()?;
-            self.expect_token(&Token::RParen)?;
+            let closing_paren_token = self.expect_token(&Token::RParen)?;
+
             let alias = TableAlias {
                 name,
                 columns: vec![],
@@ -9276,6 +9300,7 @@ impl<'a> Parser<'a> {
                 query,
                 from: None,
                 materialized: is_materialized,
+                closing_paren_token: closing_paren_token.into(),
             }
         } else {
             let columns = self.parse_table_alias_column_defs()?;
@@ -9289,14 +9314,17 @@ impl<'a> Parser<'a> {
                 }
             }
             self.expect_token(&Token::LParen)?;
+
             let query = self.parse_query()?;
-            self.expect_token(&Token::RParen)?;
+            let closing_paren_token = self.expect_token(&Token::RParen)?;
+
             let alias = TableAlias { name, columns };
             Cte {
                 alias,
                 query,
                 from: None,
                 materialized: is_materialized,
+                closing_paren_token: closing_paren_token.into(),
             }
         };
         if self.parse_keyword(Keyword::FROM) {
@@ -9316,7 +9344,7 @@ impl<'a> Parser<'a> {
     pub fn parse_query_body(&mut self, precedence: u8) -> Result<Box<SetExpr>, ParserError> {
         // We parse the expression using a Pratt parser, as in `parse_expr()`.
         // Start by parsing a restricted SELECT or a `(subquery)`:
-        let expr = if self.parse_keyword(Keyword::SELECT) {
+        let expr = if self.peek_keyword(Keyword::SELECT) {
             SetExpr::Select(self.parse_select().map(Box::new)?)
         } else if self.consume_token(&Token::LParen) {
             // CTEs are not allowed here, but the parser currently accepts them
@@ -9405,9 +9433,9 @@ impl<'a> Parser<'a> {
         }
     }
 
-    /// Parse a restricted `SELECT` statement (no CTEs / `UNION` / `ORDER BY`),
-    /// assuming the initial `SELECT` was already consumed
+    /// Parse a restricted `SELECT` statement (no CTEs / `UNION` / `ORDER BY`)
     pub fn parse_select(&mut self) -> Result<Select, ParserError> {
+        let select_token = self.expect_keyword(Keyword::SELECT)?;
         let value_table_mode =
             if dialect_of!(self is BigQueryDialect) && self.parse_keyword(Keyword::AS) {
                 if self.parse_keyword(Keyword::VALUE) {
@@ -9571,6 +9599,7 @@ impl<'a> Parser<'a> {
         };
 
         Ok(Select {
+            select_token: AttachedToken(select_token),
             distinct,
             top,
             top_before_distinct,
@@ -10656,7 +10685,7 @@ impl<'a> Parser<'a> {
                                 return self.expected("literal number", next_token);
                             };
                             self.expect_token(&Token::RBrace)?;
-                            RepetitionQuantifier::AtMost(Self::parse(n, token.location)?)
+                            RepetitionQuantifier::AtMost(Self::parse(n, token.span.start)?)
                         }
                         Token::Number(n, _) if self.consume_token(&Token::Comma) => {
                             let next_token = self.next_token();
@@ -10664,12 +10693,12 @@ impl<'a> Parser<'a> {
                                 Token::Number(m, _) => {
                                     self.expect_token(&Token::RBrace)?;
                                     RepetitionQuantifier::Range(
-                                        Self::parse(n, token.location)?,
-                                        Self::parse(m, token.location)?,
+                                        Self::parse(n, token.span.start)?,
+                                        Self::parse(m, token.span.start)?,
                                     )
                                 }
                                 Token::RBrace => {
-                                    RepetitionQuantifier::AtLeast(Self::parse(n, token.location)?)
+                                    RepetitionQuantifier::AtLeast(Self::parse(n, token.span.start)?)
                                 }
                                 _ => {
                                     return self.expected("} or upper bound", next_token);
@@ -10678,7 +10707,7 @@ impl<'a> Parser<'a> {
                         }
                         Token::Number(n, _) => {
                             self.expect_token(&Token::RBrace)?;
-                            RepetitionQuantifier::Exactly(Self::parse(n, token.location)?)
+                            RepetitionQuantifier::Exactly(Self::parse(n, token.span.start)?)
                         }
                         _ => return self.expected("quantifier range", token),
                     }
@@ -11113,7 +11142,7 @@ impl<'a> Parser<'a> {
             .parse_keywords(&[Keyword::GRANTED, Keyword::BY])
             .then(|| self.parse_identifier(false).unwrap());
 
-        let loc = self.peek_token().location;
+        let loc = self.peek_token().span.start;
         let cascade = self.parse_keyword(Keyword::CASCADE);
         let restrict = self.parse_keyword(Keyword::RESTRICT);
         if cascade && restrict {
@@ -11132,7 +11161,10 @@ impl<'a> Parser<'a> {
     /// Parse an REPLACE statement
     pub fn parse_replace(&mut self) -> Result<Statement, ParserError> {
         if !dialect_of!(self is MySqlDialect | GenericDialect) {
-            return parser_err!("Unsupported statement REPLACE", self.peek_token().location);
+            return parser_err!(
+                "Unsupported statement REPLACE",
+                self.peek_token().span.start
+            );
         }
 
         let mut insert = self.parse_insert()?;
@@ -11593,7 +11625,7 @@ impl<'a> Parser<'a> {
     }
 
     fn parse_duplicate_treatment(&mut self) -> Result<Option<DuplicateTreatment>, ParserError> {
-        let loc = self.peek_token().location;
+        let loc = self.peek_token().span.start;
         match (
             self.parse_keyword(Keyword::ALL),
             self.parse_keyword(Keyword::DISTINCT),
@@ -11608,17 +11640,17 @@ impl<'a> Parser<'a> {
     /// Parse a comma-delimited list of projections after SELECT
     pub fn parse_select_item(&mut self) -> Result<SelectItem, ParserError> {
         match self.parse_wildcard_expr()? {
-            Expr::QualifiedWildcard(prefix) => Ok(SelectItem::QualifiedWildcard(
+            Expr::QualifiedWildcard(prefix, token) => Ok(SelectItem::QualifiedWildcard(
                 prefix,
-                self.parse_wildcard_additional_options()?,
+                self.parse_wildcard_additional_options(token.0)?,
             )),
-            Expr::Wildcard => Ok(SelectItem::Wildcard(
-                self.parse_wildcard_additional_options()?,
+            Expr::Wildcard(token) => Ok(SelectItem::Wildcard(
+                self.parse_wildcard_additional_options(token.0)?,
             )),
             Expr::Identifier(v) if v.value.to_lowercase() == "from" && v.quote_style.is_none() => {
                 parser_err!(
                     format!("Expected an expression, found: {}", v),
-                    self.peek_token().location
+                    self.peek_token().span.start
                 )
             }
             Expr::BinaryOp {
@@ -11631,7 +11663,7 @@ impl<'a> Parser<'a> {
                 let Expr::Identifier(alias) = *left else {
                     return parser_err!(
                         "BUG: expected identifier expression as alias",
-                        self.peek_token().location
+                        self.peek_token().span.start
                     );
                 };
                 Ok(SelectItem::ExprWithAlias {
@@ -11653,6 +11685,7 @@ impl<'a> Parser<'a> {
     /// If it is not possible to parse it, will return an option.
     pub fn parse_wildcard_additional_options(
         &mut self,
+        wildcard_token: TokenWithLocation,
     ) -> Result<WildcardAdditionalOptions, ParserError> {
         let opt_ilike = if dialect_of!(self is GenericDialect | SnowflakeDialect) {
             self.parse_optional_select_item_ilike()?
@@ -11684,6 +11717,7 @@ impl<'a> Parser<'a> {
         };
 
         Ok(WildcardAdditionalOptions {
+            wildcard_token: wildcard_token.into(),
             opt_ilike,
             opt_exclude,
             opt_except,
@@ -11931,7 +11965,7 @@ impl<'a> Parser<'a> {
         } else {
             let next_token = self.next_token();
             let quantity = match next_token.token {
-                Token::Number(s, _) => Self::parse::<u64>(s, next_token.location)?,
+                Token::Number(s, _) => Self::parse::<u64>(s, next_token.span.start)?,
                 _ => self.expected("literal int", next_token)?,
             };
             Some(TopQuantity::Constant(quantity))
@@ -12812,10 +12846,11 @@ impl<'a> Parser<'a> {
 }
 
 impl Word {
-    pub fn to_ident(&self) -> Ident {
+    pub fn to_ident(&self, span: Span) -> Ident {
         Ident {
             value: self.value.clone(),
             quote_style: self.quote_style,
+            span,
         }
     }
 }
@@ -13389,14 +13424,17 @@ mod tests {
             Ident {
                 value: "CATALOG".to_string(),
                 quote_style: None,
+                span: Span::empty(),
             },
             Ident {
                 value: "F(o)o. \"bar".to_string(),
                 quote_style: Some('"'),
+                span: Span::empty(),
             },
             Ident {
                 value: "table".to_string(),
                 quote_style: None,
+                span: Span::empty(),
             },
         ];
         dialect.run_parser_method(r#"CATALOG."F(o)o. ""bar".table"#, |parser| {
@@ -13409,10 +13447,12 @@ mod tests {
             Ident {
                 value: "CATALOG".to_string(),
                 quote_style: None,
+                span: Span::empty(),
             },
             Ident {
                 value: "table".to_string(),
                 quote_style: None,
+                span: Span::empty(),
             },
         ];
         dialect.run_parser_method("CATALOG . table", |parser| {

src/tokenizer.rs

@@ -29,10 +29,10 @@ use alloc::{
     vec,
     vec::Vec,
 };
-use core::fmt;
 use core::iter::Peekable;
 use core::num::NonZeroU8;
 use core::str::Chars;
+use core::{cmp, fmt};
 
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
@@ -422,7 +422,9 @@ impl fmt::Display for Whitespace {
 }
 
 /// Location in input string
-#[derive(Debug, Eq, PartialEq, Clone, Copy)]
+#[derive(Eq, PartialEq, Hash, Clone, Copy, Ord, PartialOrd)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub struct Location {
     /// Line number, starting from 1
     pub line: u64,
@@ -431,36 +433,114 @@ pub struct Location {
 }
 
 impl fmt::Display for Location {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         if self.line == 0 {
             return Ok(());
         }
-        write!(
-            f,
-            // TODO: use standard compiler location syntax (<path>:<line>:<col>)
-            " at Line: {}, Column: {}",
-            self.line, self.column,
-        )
+        write!(f, " at Line: {}, Column: {}", self.line, self.column)
+    }
+}
+
+impl fmt::Debug for Location {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "Location({},{})", self.line, self.column)
+    }
+}
+
+impl Location {
+    pub fn of(line: u64, column: u64) -> Self {
+        Self { line, column }
+    }
+
+    pub fn span_to(self, end: Self) -> Span {
+        Span { start: self, end }
+    }
+}
+
+impl From<(u64, u64)> for Location {
+    fn from((line, column): (u64, u64)) -> Self {
+        Self { line, column }
+    }
+}
+
+/// A span of source code locations (start, end)
+#[derive(Eq, PartialEq, Hash, Clone, PartialOrd, Ord, Copy)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
+pub struct Span {
+    pub start: Location,
+    pub end: Location,
+}
+
+impl fmt::Debug for Span {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "Span({:?}..{:?})", self.start, self.end)
+    }
+}
+
+impl Span {
+    // An empty span (0, 0) -> (0, 0)
+    // We need a const instance for pattern matching
+    const EMPTY: Span = Self::empty();
+
+    pub fn new(start: Location, end: Location) -> Span {
+        Span { start, end }
+    }
+
+    /// Returns an empty span (0, 0) -> (0, 0)
+    /// Empty spans represent no knowledge of source location
+    pub const fn empty() -> Span {
+        Span {
+            start: Location { line: 0, column: 0 },
+            end: Location { line: 0, column: 0 },
+        }
+    }
+
+    /// Returns the smallest Span that contains both `self` and `other`
+    /// If either span is [Span::empty], the other span is returned
+    pub fn union(&self, other: &Span) -> Span {
+        // If either span is empty, return the other
+        // this prevents propagating (0, 0) through the tree
+        match (self, other) {
+            (&Span::EMPTY, _) => *other,
+            (_, &Span::EMPTY) => *self,
+            _ => Span {
+                start: cmp::min(self.start, other.start),
+                end: cmp::max(self.end, other.end),
+            },
+        }
+    }
+
+    /// Same as [Span::union] for `Option<Span>`
+    /// If `other` is `None`, `self` is returned
+    pub fn union_opt(&self, other: &Option<Span>) -> Span {
+        match other {
+            Some(other) => self.union(other),
+            None => *self,
+        }
     }
 }
 
 /// A [Token] with [Location] attached to it
-#[derive(Debug, Eq, PartialEq, Clone)]
+#[derive(Debug, Clone, Hash, Ord, PartialOrd, Eq, PartialEq)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub struct TokenWithLocation {
     pub token: Token,
-    pub location: Location,
+    pub span: Span,
 }
 
 impl TokenWithLocation {
-    pub fn new(token: Token, line: u64, column: u64) -> TokenWithLocation {
-        TokenWithLocation {
-            token,
-            location: Location { line, column },
-        }
+    pub fn new(token: Token, span: Span) -> TokenWithLocation {
+        TokenWithLocation { token, span }
     }
 
     pub fn wrap(token: Token) -> TokenWithLocation {
-        TokenWithLocation::new(token, 0, 0)
+        TokenWithLocation::new(token, Span::empty())
+    }
+
+    pub fn at(token: Token, start: Location, end: Location) -> TokenWithLocation {
+        TokenWithLocation::new(token, Span::new(start, end))
     }
 }
 
@@ -656,7 +736,9 @@ impl<'a> Tokenizer<'a> {
 
         let mut location = state.location();
         while let Some(token) = self.next_token(&mut state)? {
-            buf.push(TokenWithLocation { token, location });
+            let span = location.span_to(state.location());
+
+            buf.push(TokenWithLocation { token, span });
 
             location = state.location();
         }
@@ -2669,18 +2751,30 @@ mod tests {
             .tokenize_with_location()
             .unwrap();
         let expected = vec![
-            TokenWithLocation::new(Token::make_keyword("SELECT"), 1, 1),
-            TokenWithLocation::new(Token::Whitespace(Whitespace::Space), 1, 7),
-            TokenWithLocation::new(Token::make_word("a", None), 1, 8),
-            TokenWithLocation::new(Token::Comma, 1, 9),
-            TokenWithLocation::new(Token::Whitespace(Whitespace::Newline), 1, 10),
-            TokenWithLocation::new(Token::Whitespace(Whitespace::Space), 2, 1),
-            TokenWithLocation::new(Token::make_word("b", None), 2, 2),
+            TokenWithLocation::at(Token::make_keyword("SELECT"), (1, 1).into(), (1, 7).into()),
+            TokenWithLocation::at(
+                Token::Whitespace(Whitespace::Space),
+                (1, 7).into(),
+                (1, 8).into(),
+            ),
+            TokenWithLocation::at(Token::make_word("a", None), (1, 8).into(), (1, 9).into()),
+            TokenWithLocation::at(Token::Comma, (1, 9).into(), (1, 10).into()),
+            TokenWithLocation::at(
+                Token::Whitespace(Whitespace::Newline),
+                (1, 10).into(),
+                (2, 1).into(),
+            ),
+            TokenWithLocation::at(
+                Token::Whitespace(Whitespace::Space),
+                (2, 1).into(),
+                (2, 2).into(),
+            ),
+            TokenWithLocation::at(Token::make_word("b", None), (2, 2).into(), (2, 3).into()),
         ];
         compare(expected, tokens);
     }
 
-    fn compare<T: PartialEq + std::fmt::Debug>(expected: Vec<T>, actual: Vec<T>) {
+    fn compare<T: PartialEq + fmt::Debug>(expected: Vec<T>, actual: Vec<T>) {
         //println!("------------------------------");
         //println!("tokens   = {:?}", actual);
         //println!("expected = {:?}", expected);

tests/sqlparser_bigquery.rs

@@ -23,6 +23,7 @@ use std::ops::Deref;
 use sqlparser::ast::*;
 use sqlparser::dialect::{BigQueryDialect, GenericDialect};
 use sqlparser::parser::{ParserError, ParserOptions};
+use sqlparser::tokenizer::Span;
 use test_utils::*;
 
 #[test]
@@ -678,10 +679,12 @@ fn parse_typed_struct_syntax_bigquery() {
                     Ident {
                         value: "t".into(),
                         quote_style: None,
+                        span: Span::empty(),
                     },
                     Ident {
                         value: "str_col".into(),
                         quote_style: None,
+                        span: Span::empty(),
                     },
                 ]),
             ],
@@ -690,6 +693,7 @@ fn parse_typed_struct_syntax_bigquery() {
                     field_name: Some(Ident {
                         value: "x".into(),
                         quote_style: None,
+                        span: Span::empty(),
                     }),
                     field_type: DataType::Int64
                 },
@@ -697,6 +701,7 @@ fn parse_typed_struct_syntax_bigquery() {
                     field_name: Some(Ident {
                         value: "y".into(),
                         quote_style: None,
+                        span: Span::empty(),
                     }),
                     field_type: DataType::String(None)
                 },
@@ -709,6 +714,7 @@ fn parse_typed_struct_syntax_bigquery() {
             values: vec![Expr::Identifier(Ident {
                 value: "nested_col".into(),
                 quote_style: None,
+                span: Span::empty(),
             }),],
             fields: vec![
                 StructField {
@@ -740,6 +746,7 @@ fn parse_typed_struct_syntax_bigquery() {
             values: vec![Expr::Identifier(Ident {
                 value: "nested_col".into(),
                 quote_style: None,
+                span: Span::empty(),
             }),],
             fields: vec![
                 StructField {
@@ -987,10 +994,12 @@ fn parse_typed_struct_syntax_bigquery_and_generic() {
                     Ident {
                         value: "t".into(),
                         quote_style: None,
+                        span: Span::empty(),
                     },
                     Ident {
                         value: "str_col".into(),
                         quote_style: None,
+                        span: Span::empty(),
                     },
                 ]),
             ],
@@ -999,6 +1008,7 @@ fn parse_typed_struct_syntax_bigquery_and_generic() {
                     field_name: Some(Ident {
                         value: "x".into(),
                         quote_style: None,
+                        span: Span::empty(),
                     }),
                     field_type: DataType::Int64
                 },
@@ -1006,6 +1016,7 @@ fn parse_typed_struct_syntax_bigquery_and_generic() {
                     field_name: Some(Ident {
                         value: "y".into(),
                         quote_style: None,
+                        span: Span::empty(),
                     }),
                     field_type: DataType::String(None)
                 },
@@ -1018,6 +1029,7 @@ fn parse_typed_struct_syntax_bigquery_and_generic() {
             values: vec![Expr::Identifier(Ident {
                 value: "nested_col".into(),
                 quote_style: None,
+                span: Span::empty(),
             }),],
             fields: vec![
                 StructField {
@@ -1049,6 +1061,7 @@ fn parse_typed_struct_syntax_bigquery_and_generic() {
             values: vec![Expr::Identifier(Ident {
                 value: "nested_col".into(),
                 quote_style: None,
+                span: Span::empty(),
             }),],
             fields: vec![
                 StructField {

tests/sqlparser_clickhouse.rs

@@ -21,6 +21,8 @@
 #[macro_use]
 mod test_utils;
 
+use helpers::attached_token::AttachedToken;
+use sqlparser::tokenizer::Span;
 use test_utils::*;
 
 use sqlparser::ast::Expr::{BinaryOp, Identifier, MapAccess};
@@ -39,12 +41,14 @@ fn parse_map_access_expr() {
     assert_eq!(
         Select {
             distinct: None,
+            select_token: AttachedToken::empty(),
             top: None,
             top_before_distinct: false,
             projection: vec![UnnamedExpr(MapAccess {
                 column: Box::new(Identifier(Ident {
                     value: "string_values".to_string(),
                     quote_style: None,
+                    span: Span::empty(),
                 })),
                 keys: vec![MapAccessKey {
                     key: call(
@@ -903,7 +907,8 @@ fn parse_create_view_with_fields_data_types() {
                         data_type: Some(DataType::Custom(
                             ObjectName(vec![Ident {
                                 value: "int".into(),
-                                quote_style: Some('"')
+                                quote_style: Some('"'),
+                                span: Span::empty(),
                             }]),
                             vec![]
                         )),
@@ -914,7 +919,8 @@ fn parse_create_view_with_fields_data_types() {
                         data_type: Some(DataType::Custom(
                             ObjectName(vec![Ident {
                                 value: "String".into(),
-                                quote_style: Some('"')
+                                quote_style: Some('"'),
+                                span: Span::empty(),
                             }]),
                             vec![]
                         )),

tests/sqlparser_common.rs

@@ -25,6 +25,7 @@
 
 extern crate core;
 
+use helpers::attached_token::AttachedToken;
 use matches::assert_matches;
 use sqlparser::ast::SelectItem::UnnamedExpr;
 use sqlparser::ast::TableFactor::{Pivot, Unpivot};
@@ -36,6 +37,7 @@ use sqlparser::dialect::{
 };
 use sqlparser::keywords::{Keyword, ALL_KEYWORDS};
 use sqlparser::parser::{Parser, ParserError, ParserOptions};
+use sqlparser::tokenizer::Span;
 use sqlparser::tokenizer::Tokenizer;
 use test_utils::{
     all_dialects, all_dialects_where, alter_table_op, assert_eq_vec, call, expr_from_projection,
@@ -378,6 +380,7 @@ fn parse_update_set_from() {
                     subquery: Box::new(Query {
                         with: None,
                         body: Box::new(SetExpr::Select(Box::new(Select {
+                            select_token: AttachedToken::empty(),
                             distinct: None,
                             top: None,
                             top_before_distinct: false,
@@ -1271,6 +1274,7 @@ fn parse_select_with_date_column_name() {
         &Expr::Identifier(Ident {
             value: "date".into(),
             quote_style: None,
+            span: Span::empty(),
         }),
         expr_from_projection(only(&select.projection)),
     );
@@ -1789,6 +1793,7 @@ fn parse_null_like() {
             alias: Ident {
                 value: "col_null".to_owned(),
                 quote_style: None,
+                span: Span::empty(),
             },
         },
         select.projection[0]
@@ -1805,6 +1810,7 @@ fn parse_null_like() {
             alias: Ident {
                 value: "null_col".to_owned(),
                 quote_style: None,
+                span: Span::empty(),
             },
         },
         select.projection[1]
@@ -2823,6 +2829,7 @@ fn parse_listagg() {
                     expr: Expr::Identifier(Ident {
                         value: "id".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     }),
                     asc: None,
                     nulls_first: None,
@@ -2832,6 +2839,7 @@ fn parse_listagg() {
                     expr: Expr::Identifier(Ident {
                         value: "username".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     }),
                     asc: None,
                     nulls_first: None,
@@ -4038,7 +4046,8 @@ fn parse_alter_table() {
                 [SqlOption::KeyValue {
                     key: Ident {
                         value: "classification".to_string(),
-                        quote_style: Some('\'')
+                        quote_style: Some('\''),
+                        span: Span::empty(),
                     },
                     value: Expr::Value(Value::SingleQuotedString("parquet".to_string())),
                 }],
@@ -4824,6 +4833,7 @@ fn test_parse_named_window() {
     ORDER BY C3";
     let actual_select_only = verified_only_select(sql);
     let expected = Select {
+        select_token: AttachedToken::empty(),
         distinct: None,
         top: None,
         top_before_distinct: false,
@@ -4833,6 +4843,7 @@ fn test_parse_named_window() {
                     name: ObjectName(vec![Ident {
                         value: "MIN".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     }]),
                     parameters: FunctionArguments::None,
                     args: FunctionArguments::List(FunctionArgumentList {
@@ -4841,6 +4852,7 @@ fn test_parse_named_window() {
                             Expr::Identifier(Ident {
                                 value: "c12".to_string(),
                                 quote_style: None,
+                                span: Span::empty(),
                             }),
                         ))],
                         clauses: vec![],
@@ -4850,12 +4862,14 @@ fn test_parse_named_window() {
                     over: Some(WindowType::NamedWindow(Ident {
                         value: "window1".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     })),
                     within_group: vec![],
                 }),
                 alias: Ident {
                     value: "min1".to_string(),
                     quote_style: None,
+                    span: Span::empty(),
                 },
             },
             SelectItem::ExprWithAlias {
@@ -4863,6 +4877,7 @@ fn test_parse_named_window() {
                     name: ObjectName(vec![Ident {
                         value: "MAX".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     }]),
                     parameters: FunctionArguments::None,
                     args: FunctionArguments::List(FunctionArgumentList {
@@ -4871,6 +4886,7 @@ fn test_parse_named_window() {
                             Expr::Identifier(Ident {
                                 value: "c12".to_string(),
                                 quote_style: None,
+                                span: Span::empty(),
                             }),
                         ))],
                         clauses: vec![],
@@ -4880,12 +4896,14 @@ fn test_parse_named_window() {
                     over: Some(WindowType::NamedWindow(Ident {
                         value: "window2".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     })),
                     within_group: vec![],
                 }),
                 alias: Ident {
                     value: "max1".to_string(),
                     quote_style: None,
+                    span: Span::empty(),
                 },
             },
         ],
@@ -4895,6 +4913,7 @@ fn test_parse_named_window() {
                 name: ObjectName(vec![Ident {
                     value: "aggregate_test_100".to_string(),
                     quote_style: None,
+                    span: Span::empty(),
                 }]),
                 alias: None,
                 args: None,
@@ -4919,6 +4938,7 @@ fn test_parse_named_window() {
                 Ident {
                     value: "window1".to_string(),
                     quote_style: None,
+                    span: Span::empty(),
                 },
                 NamedWindowExpr::WindowSpec(WindowSpec {
                     window_name: None,
@@ -4927,6 +4947,7 @@ fn test_parse_named_window() {
                         expr: Expr::Identifier(Ident {
                             value: "C12".to_string(),
                             quote_style: None,
+                            span: Span::empty(),
                         }),
                         asc: None,
                         nulls_first: None,
@@ -4939,12 +4960,14 @@ fn test_parse_named_window() {
                 Ident {
                     value: "window2".to_string(),
                     quote_style: None,
+                    span: Span::empty(),
                 },
                 NamedWindowExpr::WindowSpec(WindowSpec {
                     window_name: None,
                     partition_by: vec![Expr::Identifier(Ident {
                         value: "C11".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     })],
                     order_by: vec![],
                     window_frame: None,
@@ -5425,6 +5448,7 @@ fn interval_disallow_interval_expr_gt() {
             right: Box::new(Expr::Identifier(Ident {
                 value: "x".to_string(),
                 quote_style: None,
+                span: Span::empty(),
             })),
         }
     )
@@ -5465,12 +5489,14 @@ fn parse_interval_and_or_xor() {
     let expected_ast = vec![Statement::Query(Box::new(Query {
         with: None,
         body: Box::new(SetExpr::Select(Box::new(Select {
+            select_token: AttachedToken::empty(),
             distinct: None,
             top: None,
             top_before_distinct: false,
             projection: vec![UnnamedExpr(Expr::Identifier(Ident {
                 value: "col".to_string(),
                 quote_style: None,
+                span: Span::empty(),
             }))],
             into: None,
             from: vec![TableWithJoins {
@@ -5478,6 +5504,7 @@ fn parse_interval_and_or_xor() {
                     name: ObjectName(vec![Ident {
                         value: "test".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     }]),
                     alias: None,
                     args: None,
@@ -5496,12 +5523,14 @@ fn parse_interval_and_or_xor() {
                     left: Box::new(Expr::Identifier(Ident {
                         value: "d3_date".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     })),
                     op: BinaryOperator::Gt,
                     right: Box::new(Expr::BinaryOp {
                         left: Box::new(Expr::Identifier(Ident {
                             value: "d1_date".to_string(),
                             quote_style: None,
+                            span: Span::empty(),
                         })),
                         op: BinaryOperator::Plus,
                         right: Box::new(Expr::Interval(Interval {
@@ -5520,12 +5549,14 @@ fn parse_interval_and_or_xor() {
                     left: Box::new(Expr::Identifier(Ident {
                         value: "d2_date".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     })),
                     op: BinaryOperator::Gt,
                     right: Box::new(Expr::BinaryOp {
                         left: Box::new(Expr::Identifier(Ident {
                             value: "d1_date".to_string(),
                             quote_style: None,
+                            span: Span::empty(),
                         })),
                         op: BinaryOperator::Plus,
                         right: Box::new(Expr::Interval(Interval {
@@ -5617,6 +5648,7 @@ fn parse_at_timezone() {
             alias: Ident {
                 value: "hour".to_string(),
                 quote_style: Some('"'),
+                span: Span::empty(),
             },
         },
         only(&select.projection),
@@ -6637,12 +6669,14 @@ fn parse_recursive_cte() {
             name: Ident {
                 value: "nums".to_string(),
                 quote_style: None,
+                span: Span::empty(),
             },
             columns: vec![TableAliasColumnDef::from_name("val")],
         },
         query: Box::new(cte_query),
         from: None,
         materialized: None,
+        closing_paren_token: AttachedToken::empty(),
     };
     assert_eq!(with.cte_tables.first().unwrap(), &expected);
 }
@@ -7616,22 +7650,18 @@ fn lateral_function() {
     let sql = "SELECT * FROM customer LEFT JOIN LATERAL generate_series(1, customer.id)";
     let actual_select_only = verified_only_select(sql);
     let expected = Select {
+        select_token: AttachedToken::empty(),
         distinct: None,
         top: None,
+        projection: vec![SelectItem::Wildcard(WildcardAdditionalOptions::default())],
         top_before_distinct: false,
-        projection: vec![SelectItem::Wildcard(WildcardAdditionalOptions {
-            opt_ilike: None,
-            opt_exclude: None,
-            opt_except: None,
-            opt_rename: None,
-            opt_replace: None,
-        })],
         into: None,
         from: vec![TableWithJoins {
             relation: TableFactor::Table {
                 name: ObjectName(vec![Ident {
                     value: "customer".to_string(),
                     quote_style: None,
+                    span: Span::empty(),
                 }]),
                 alias: None,
                 args: None,
@@ -8270,10 +8300,12 @@ fn parse_grant() {
                                 Ident {
                                     value: "shape".into(),
                                     quote_style: None,
+                                    span: Span::empty(),
                                 },
                                 Ident {
                                     value: "size".into(),
                                     quote_style: None,
+                                    span: Span::empty(),
                                 },
                             ])
                         },
@@ -8467,6 +8499,7 @@ fn parse_merge() {
                     subquery: Box::new(Query {
                         with: None,
                         body: Box::new(SetExpr::Select(Box::new(Select {
+                            select_token: AttachedToken::empty(),
                             distinct: None,
                             top: None,
                             top_before_distinct: false,
@@ -8515,6 +8548,7 @@ fn parse_merge() {
                         name: Ident {
                             value: "stg".to_string(),
                             quote_style: None,
+                            span: Span::empty(),
                         },
                         columns: vec![],
                     }),
@@ -8714,7 +8748,8 @@ fn test_lock_table() {
         lock.of.unwrap().0,
         vec![Ident {
             value: "school".to_string(),
-            quote_style: None
+            quote_style: None,
+            span: Span::empty(),
         }]
     );
     assert!(lock.nonblock.is_none());
@@ -8728,7 +8763,8 @@ fn test_lock_table() {
         lock.of.unwrap().0,
         vec![Ident {
             value: "school".to_string(),
-            quote_style: None
+            quote_style: None,
+            span: Span::empty(),
         }]
     );
     assert!(lock.nonblock.is_none());
@@ -8742,7 +8778,8 @@ fn test_lock_table() {
         lock.of.unwrap().0,
         vec![Ident {
             value: "school".to_string(),
-            quote_style: None
+            quote_style: None,
+            span: Span::empty(),
         }]
     );
     assert!(lock.nonblock.is_none());
@@ -8752,7 +8789,8 @@ fn test_lock_table() {
         lock.of.unwrap().0,
         vec![Ident {
             value: "student".to_string(),
-            quote_style: None
+            quote_style: None,
+            span: Span::empty(),
         }]
     );
     assert!(lock.nonblock.is_none());
@@ -8769,7 +8807,8 @@ fn test_lock_nonblock() {
         lock.of.unwrap().0,
         vec![Ident {
             value: "school".to_string(),
-            quote_style: None
+            quote_style: None,
+            span: Span::empty(),
         }]
     );
     assert_eq!(lock.nonblock.unwrap(), NonBlock::SkipLocked);
@@ -8783,7 +8822,8 @@ fn test_lock_nonblock() {
         lock.of.unwrap().0,
         vec![Ident {
             value: "school".to_string(),
-            quote_style: None
+            quote_style: None,
+            span: Span::empty(),
         }]
     );
     assert_eq!(lock.nonblock.unwrap(), NonBlock::Nowait);
@@ -9584,7 +9624,8 @@ fn parse_pivot_table() {
             alias: Some(TableAlias {
                 name: Ident {
                     value: "p".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 },
                 columns: vec![
                     TableAliasColumnDef::from_name("c"),
@@ -9636,12 +9677,14 @@ fn parse_unpivot_table() {
             }),
             value: Ident {
                 value: "quantity".to_string(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty()
             },
 
             name: Ident {
                 value: "quarter".to_string(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty()
             },
             columns: ["Q1", "Q2", "Q3", "Q4"]
                 .into_iter()
@@ -9704,12 +9747,14 @@ fn parse_pivot_unpivot_table() {
                 }),
                 value: Ident {
                     value: "population".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty()
                 },
 
                 name: Ident {
                     value: "year".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty()
                 },
                 columns: ["population_2000", "population_2010"]
                     .into_iter()
@@ -9999,10 +10044,12 @@ fn parse_execute_stored_procedure() {
             Ident {
                 value: "my_schema".to_string(),
                 quote_style: None,
+                span: Span::empty(),
             },
             Ident {
                 value: "my_stored_procedure".to_string(),
                 quote_style: None,
+                span: Span::empty(),
             },
         ]),
         parameters: vec![
@@ -10098,6 +10145,7 @@ fn parse_unload() {
         Statement::Unload {
             query: Box::new(Query {
                 body: Box::new(SetExpr::Select(Box::new(Select {
+                    select_token: AttachedToken::empty(),
                     distinct: None,
                     top: None,
                     top_before_distinct: false,
@@ -10143,12 +10191,14 @@ fn parse_unload() {
             }),
             to: Ident {
                 value: "s3://...".to_string(),
-                quote_style: Some('\'')
+                quote_style: Some('\''),
+                span: Span::empty(),
             },
             with: vec![SqlOption::KeyValue {
                 key: Ident {
                     value: "format".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 },
                 value: Expr::Value(Value::SingleQuotedString("AVRO".to_string()))
             }]
@@ -10275,6 +10325,7 @@ fn parse_map_access_expr() {
 #[test]
 fn parse_connect_by() {
     let expect_query = Select {
+        select_token: AttachedToken::empty(),
         distinct: None,
         top: None,
         top_before_distinct: false,
@@ -10363,6 +10414,7 @@ fn parse_connect_by() {
     assert_eq!(
         all_dialects_where(|d| d.supports_connect_by()).verified_only_select(connect_by_3),
         Select {
+            select_token: AttachedToken::empty(),
             distinct: None,
             top: None,
             top_before_distinct: false,
@@ -11206,6 +11258,7 @@ fn test_extract_seconds_ok() {
             field: DateTimeField::Custom(Ident {
                 value: "seconds".to_string(),
                 quote_style: None,
+                span: Span::empty(),
             }),
             syntax: ExtractSyntax::From,
             expr: Box::new(Expr::Cast {
@@ -11231,6 +11284,7 @@ fn test_extract_seconds_single_quote_ok() {
             field: DateTimeField::Custom(Ident {
                 value: "seconds".to_string(),
                 quote_style: Some('\''),
+                span: Span::empty(),
             }),
             syntax: ExtractSyntax::From,
             expr: Box::new(Expr::Cast {
@@ -12130,7 +12184,8 @@ fn test_load_extension() {
             assert_eq!(
                 Ident {
                     value: "filename".to_string(),
-                    quote_style: Some('\'')
+                    quote_style: Some('\''),
+                    span: Span::empty(),
                 },
                 extension_name
             );

tests/sqlparser_duckdb.rs

@@ -18,6 +18,8 @@
 #[macro_use]
 mod test_utils;
 
+use helpers::attached_token::AttachedToken;
+use sqlparser::tokenizer::Span;
 use test_utils::*;
 
 use sqlparser::ast::*;
@@ -259,22 +261,18 @@ fn test_select_union_by_name() {
             op: SetOperator::Union,
             set_quantifier: *expected_quantifier,
             left: Box::<SetExpr>::new(SetExpr::Select(Box::new(Select {
+                select_token: AttachedToken::empty(),
                 distinct: None,
                 top: None,
+                projection: vec![SelectItem::Wildcard(WildcardAdditionalOptions::default())],
                 top_before_distinct: false,
-                projection: vec![SelectItem::Wildcard(WildcardAdditionalOptions {
-                    opt_ilike: None,
-                    opt_exclude: None,
-                    opt_except: None,
-                    opt_rename: None,
-                    opt_replace: None,
-                })],
                 into: None,
                 from: vec![TableWithJoins {
                     relation: TableFactor::Table {
                         name: ObjectName(vec![Ident {
                             value: "capitals".to_string(),
                             quote_style: None,
+                            span: Span::empty(),
                         }]),
                         alias: None,
                         args: None,
@@ -301,22 +299,18 @@ fn test_select_union_by_name() {
                 connect_by: None,
             }))),
             right: Box::<SetExpr>::new(SetExpr::Select(Box::new(Select {
+                select_token: AttachedToken::empty(),
                 distinct: None,
                 top: None,
+                projection: vec![SelectItem::Wildcard(WildcardAdditionalOptions::default())],
                 top_before_distinct: false,
-                projection: vec![SelectItem::Wildcard(WildcardAdditionalOptions {
-                    opt_ilike: None,
-                    opt_exclude: None,
-                    opt_except: None,
-                    opt_rename: None,
-                    opt_replace: None,
-                })],
                 into: None,
                 from: vec![TableWithJoins {
                     relation: TableFactor::Table {
                         name: ObjectName(vec![Ident {
                             value: "weather".to_string(),
                             quote_style: None,
+                            span: Span::empty(),
                         }]),
                         alias: None,
                         args: None,
@@ -355,12 +349,28 @@ fn test_duckdb_install() {
         Statement::Install {
             extension_name: Ident {
                 value: "tpch".to_string(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty()
             }
         }
     );
 }
 
+#[test]
+fn test_duckdb_load_extension() {
+    let stmt = duckdb().verified_stmt("LOAD my_extension");
+    assert_eq!(
+        Statement::Load {
+            extension_name: Ident {
+                value: "my_extension".to_string(),
+                quote_style: None,
+                span: Span::empty()
+            }
+        },
+        stmt
+    );
+}
+
 #[test]
 fn test_duckdb_struct_literal() {
     //struct literal syntax https://duckdb.org/docs/sql/data_types/struct#creating-structs

tests/sqlparser_mssql.rs

@@ -22,6 +22,8 @@
 #[macro_use]
 mod test_utils;
 
+use helpers::attached_token::AttachedToken;
+use sqlparser::tokenizer::Span;
 use test_utils::*;
 
 use sqlparser::ast::DataType::{Int, Text};
@@ -113,6 +115,7 @@ fn parse_create_procedure() {
                 settings: None,
                 format_clause: None,
                 body: Box::new(SetExpr::Select(Box::new(Select {
+                    select_token: AttachedToken::empty(),
                     distinct: None,
                     top: None,
                     top_before_distinct: false,
@@ -138,14 +141,16 @@ fn parse_create_procedure() {
                 ProcedureParam {
                     name: Ident {
                         value: "@foo".into(),
-                        quote_style: None
+                        quote_style: None,
+                        span: Span::empty(),
                     },
                     data_type: DataType::Int(None)
                 },
                 ProcedureParam {
                     name: Ident {
                         value: "@bar".into(),
-                        quote_style: None
+                        quote_style: None,
+                        span: Span::empty(),
                     },
                     data_type: DataType::Varchar(Some(CharacterLength::IntegerLength {
                         length: 256,
@@ -155,7 +160,8 @@ fn parse_create_procedure() {
             ]),
             name: ObjectName(vec![Ident {
                 value: "test".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             }])
         }
     )
@@ -204,15 +210,9 @@ fn parse_mssql_openjson() {
     assert_eq!(
         vec![TableWithJoins {
             relation: TableFactor::Table {
-                name: ObjectName(vec![Ident {
-                    value: "t_test_table".into(),
-                    quote_style: None,
-                },]),
+                name: ObjectName(vec![Ident::new("t_test_table")]),
                 alias: Some(TableAlias {
-                    name: Ident {
-                        value: "A".into(),
-                        quote_style: None
-                    },
+                    name: Ident::new("A"),
                     columns: vec![]
                 }),
                 args: None,
@@ -224,23 +224,13 @@ fn parse_mssql_openjson() {
             },
             joins: vec![Join {
                 relation: TableFactor::OpenJsonTable {
-                    json_expr: Expr::CompoundIdentifier(vec![
-                        Ident {
-                            value: "A".into(),
-                            quote_style: None,
-                        },
-                        Ident {
-                            value: "param".into(),
-                            quote_style: None,
-                        }
-                    ]),
+                    json_expr: Expr::CompoundIdentifier(
+                        vec![Ident::new("A"), Ident::new("param"),]
+                    ),
                     json_path: Some(Value::SingleQuotedString("$.config".into())),
                     columns: vec![
                         OpenJsonTableColumn {
-                            name: Ident {
-                                value: "kind".into(),
-                                quote_style: None,
-                            },
+                            name: Ident::new("kind"),
                             r#type: DataType::Varchar(Some(CharacterLength::IntegerLength {
                                 length: 20,
                                 unit: None
@@ -252,6 +242,7 @@ fn parse_mssql_openjson() {
                             name: Ident {
                                 value: "id_list".into(),
                                 quote_style: Some('['),
+                                span: Span::empty(),
                             },
                             r#type: DataType::Nvarchar(Some(CharacterLength::Max)),
                             path: Some("$.id_list".into()),
@@ -259,10 +250,7 @@ fn parse_mssql_openjson() {
                         }
                     ],
                     alias: Some(TableAlias {
-                        name: Ident {
-                            value: "B".into(),
-                            quote_style: None
-                        },
+                        name: Ident::new("B"),
                         columns: vec![]
                     })
                 },
@@ -280,15 +268,9 @@ fn parse_mssql_openjson() {
     assert_eq!(
         vec![TableWithJoins {
             relation: TableFactor::Table {
-                name: ObjectName(vec![Ident {
-                    value: "t_test_table".into(),
-                    quote_style: None,
-                },]),
+                name: ObjectName(vec![Ident::new("t_test_table"),]),
                 alias: Some(TableAlias {
-                    name: Ident {
-                        value: "A".into(),
-                        quote_style: None
-                    },
+                    name: Ident::new("A"),
                     columns: vec![]
                 }),
                 args: None,
@@ -300,23 +282,13 @@ fn parse_mssql_openjson() {
             },
             joins: vec![Join {
                 relation: TableFactor::OpenJsonTable {
-                    json_expr: Expr::CompoundIdentifier(vec![
-                        Ident {
-                            value: "A".into(),
-                            quote_style: None,
-                        },
-                        Ident {
-                            value: "param".into(),
-                            quote_style: None,
-                        }
-                    ]),
+                    json_expr: Expr::CompoundIdentifier(
+                        vec![Ident::new("A"), Ident::new("param"),]
+                    ),
                     json_path: None,
                     columns: vec![
                         OpenJsonTableColumn {
-                            name: Ident {
-                                value: "kind".into(),
-                                quote_style: None,
-                            },
+                            name: Ident::new("kind"),
                             r#type: DataType::Varchar(Some(CharacterLength::IntegerLength {
                                 length: 20,
                                 unit: None
@@ -328,6 +300,7 @@ fn parse_mssql_openjson() {
                             name: Ident {
                                 value: "id_list".into(),
                                 quote_style: Some('['),
+                                span: Span::empty(),
                             },
                             r#type: DataType::Nvarchar(Some(CharacterLength::Max)),
                             path: Some("$.id_list".into()),
@@ -335,10 +308,7 @@ fn parse_mssql_openjson() {
                         }
                     ],
                     alias: Some(TableAlias {
-                        name: Ident {
-                            value: "B".into(),
-                            quote_style: None
-                        },
+                        name: Ident::new("B"),
                         columns: vec![]
                     })
                 },
@@ -356,15 +326,10 @@ fn parse_mssql_openjson() {
     assert_eq!(
         vec![TableWithJoins {
             relation: TableFactor::Table {
-                name: ObjectName(vec![Ident {
-                    value: "t_test_table".into(),
-                    quote_style: None,
-                },]),
+                name: ObjectName(vec![Ident::new("t_test_table")]),
+
                 alias: Some(TableAlias {
-                    name: Ident {
-                        value: "A".into(),
-                        quote_style: None
-                    },
+                    name: Ident::new("A"),
                     columns: vec![]
                 }),
                 args: None,
@@ -376,23 +341,13 @@ fn parse_mssql_openjson() {
             },
             joins: vec![Join {
                 relation: TableFactor::OpenJsonTable {
-                    json_expr: Expr::CompoundIdentifier(vec![
-                        Ident {
-                            value: "A".into(),
-                            quote_style: None,
-                        },
-                        Ident {
-                            value: "param".into(),
-                            quote_style: None,
-                        }
-                    ]),
+                    json_expr: Expr::CompoundIdentifier(
+                        vec![Ident::new("A"), Ident::new("param"),]
+                    ),
                     json_path: None,
                     columns: vec![
                         OpenJsonTableColumn {
-                            name: Ident {
-                                value: "kind".into(),
-                                quote_style: None,
-                            },
+                            name: Ident::new("kind"),
                             r#type: DataType::Varchar(Some(CharacterLength::IntegerLength {
                                 length: 20,
                                 unit: None
@@ -404,6 +359,7 @@ fn parse_mssql_openjson() {
                             name: Ident {
                                 value: "id_list".into(),
                                 quote_style: Some('['),
+                                span: Span::empty(),
                             },
                             r#type: DataType::Nvarchar(Some(CharacterLength::Max)),
                             path: None,
@@ -411,10 +367,7 @@ fn parse_mssql_openjson() {
                         }
                     ],
                     alias: Some(TableAlias {
-                        name: Ident {
-                            value: "B".into(),
-                            quote_style: None
-                        },
+                        name: Ident::new("B"),
                         columns: vec![]
                     })
                 },
@@ -432,15 +385,9 @@ fn parse_mssql_openjson() {
     assert_eq!(
         vec![TableWithJoins {
             relation: TableFactor::Table {
-                name: ObjectName(vec![Ident {
-                    value: "t_test_table".into(),
-                    quote_style: None,
-                },]),
+                name: ObjectName(vec![Ident::new("t_test_table")]),
                 alias: Some(TableAlias {
-                    name: Ident {
-                        value: "A".into(),
-                        quote_style: None
-                    },
+                    name: Ident::new("A"),
                     columns: vec![]
                 }),
                 args: None,
@@ -452,23 +399,13 @@ fn parse_mssql_openjson() {
             },
             joins: vec![Join {
                 relation: TableFactor::OpenJsonTable {
-                    json_expr: Expr::CompoundIdentifier(vec![
-                        Ident {
-                            value: "A".into(),
-                            quote_style: None,
-                        },
-                        Ident {
-                            value: "param".into(),
-                            quote_style: None,
-                        }
-                    ]),
+                    json_expr: Expr::CompoundIdentifier(
+                        vec![Ident::new("A"), Ident::new("param"),]
+                    ),
                     json_path: Some(Value::SingleQuotedString("$.config".into())),
                     columns: vec![],
                     alias: Some(TableAlias {
-                        name: Ident {
-                            value: "B".into(),
-                            quote_style: None
-                        },
+                        name: Ident::new("B"),
                         columns: vec![]
                     })
                 },
@@ -486,15 +423,9 @@ fn parse_mssql_openjson() {
     assert_eq!(
         vec![TableWithJoins {
             relation: TableFactor::Table {
-                name: ObjectName(vec![Ident {
-                    value: "t_test_table".into(),
-                    quote_style: None,
-                },]),
+                name: ObjectName(vec![Ident::new("t_test_table")]),
                 alias: Some(TableAlias {
-                    name: Ident {
-                        value: "A".into(),
-                        quote_style: None
-                    },
+                    name: Ident::new("A"),
                     columns: vec![]
                 }),
                 args: None,
@@ -506,23 +437,13 @@ fn parse_mssql_openjson() {
             },
             joins: vec![Join {
                 relation: TableFactor::OpenJsonTable {
-                    json_expr: Expr::CompoundIdentifier(vec![
-                        Ident {
-                            value: "A".into(),
-                            quote_style: None,
-                        },
-                        Ident {
-                            value: "param".into(),
-                            quote_style: None,
-                        }
-                    ]),
+                    json_expr: Expr::CompoundIdentifier(
+                        vec![Ident::new("A"), Ident::new("param"),]
+                    ),
                     json_path: None,
                     columns: vec![],
                     alias: Some(TableAlias {
-                        name: Ident {
-                            value: "B".into(),
-                            quote_style: None
-                        },
+                        name: Ident::new("B"),
                         columns: vec![]
                     })
                 },
@@ -607,7 +528,8 @@ fn parse_mssql_create_role() {
                 authorization_owner,
                 Some(ObjectName(vec![Ident {
                     value: "helena".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]))
             );
         }
@@ -623,12 +545,14 @@ fn parse_alter_role() {
         [Statement::AlterRole {
             name: Ident {
                 value: "old_name".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             },
             operation: AlterRoleOperation::RenameRole {
                 role_name: Ident {
                     value: "new_name".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }
             },
         }]
@@ -640,12 +564,14 @@ fn parse_alter_role() {
         Statement::AlterRole {
             name: Ident {
                 value: "role_name".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             },
             operation: AlterRoleOperation::AddMember {
                 member_name: Ident {
                     value: "new_member".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }
             },
         }
@@ -657,12 +583,14 @@ fn parse_alter_role() {
         Statement::AlterRole {
             name: Ident {
                 value: "role_name".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             },
             operation: AlterRoleOperation::DropMember {
                 member_name: Ident {
                     value: "old_member".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }
             },
         }
@@ -1137,13 +1065,15 @@ fn parse_substring_in_select() {
                     with: None,
 
                     body: Box::new(SetExpr::Select(Box::new(Select {
+                        select_token: AttachedToken::empty(),
                         distinct: Some(Distinct::Distinct),
                         top: None,
                         top_before_distinct: false,
                         projection: vec![SelectItem::UnnamedExpr(Expr::Substring {
                             expr: Box::new(Expr::Identifier(Ident {
                                 value: "description".to_string(),
-                                quote_style: None
+                                quote_style: None,
+                                span: Span::empty(),
                             })),
                             substring_from: Some(Box::new(Expr::Value(number("0")))),
                             substring_for: Some(Box::new(Expr::Value(number("1")))),
@@ -1154,7 +1084,8 @@ fn parse_substring_in_select() {
                             relation: TableFactor::Table {
                                 name: ObjectName(vec![Ident {
                                     value: "test".to_string(),
-                                    quote_style: None
+                                    quote_style: None,
+                                    span: Span::empty(),
                                 }]),
                                 alias: None,
                                 args: None,
@@ -1208,7 +1139,8 @@ fn parse_mssql_declare() {
                 Declare {
                     names: vec![Ident {
                         value: "@foo".to_string(),
-                        quote_style: None
+                        quote_style: None,
+                        span: Span::empty(),
                     }],
                     data_type: None,
                     assignment: None,
@@ -1222,7 +1154,8 @@ fn parse_mssql_declare() {
                 Declare {
                     names: vec![Ident {
                         value: "@bar".to_string(),
-                        quote_style: None
+                        quote_style: None,
+                        span: Span::empty(),
                     }],
                     data_type: Some(Int(None)),
                     assignment: None,
@@ -1236,7 +1169,8 @@ fn parse_mssql_declare() {
                 Declare {
                     names: vec![Ident {
                         value: "@baz".to_string(),
-                        quote_style: None
+                        quote_style: None,
+                        span: Span::empty(),
                     }],
                     data_type: Some(Text),
                     assignment: Some(MsSqlAssignment(Box::new(Expr::Value(SingleQuotedString(
@@ -1260,10 +1194,7 @@ fn parse_mssql_declare() {
         vec![
             Statement::Declare {
                 stmts: vec![Declare {
-                    names: vec![Ident {
-                        value: "@bar".to_string(),
-                        quote_style: None
-                    }],
+                    names: vec![Ident::new("@bar"),],
                     data_type: Some(Int(None)),
                     assignment: None,
                     declare_type: None,
@@ -1292,6 +1223,7 @@ fn parse_mssql_declare() {
                 settings: None,
                 format_clause: None,
                 body: Box::new(SetExpr::Select(Box::new(Select {
+                    select_token: AttachedToken::empty(),
                     distinct: None,
                     top: None,
                     top_before_distinct: false,
@@ -1364,10 +1296,12 @@ fn parse_create_table_with_valid_options() {
                     key: Ident {
                         value: "DISTRIBUTION".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     },
                     value: Expr::Identifier(Ident {
                         value: "ROUND_ROBIN".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     })
                 },
                 SqlOption::Partition {
@@ -1411,6 +1345,7 @@ fn parse_create_table_with_valid_options() {
                             name: Ident {
                                 value: "column_a".to_string(),
                                 quote_style: None,
+                                span: Span::empty(),
                             },
                             asc: Some(true),
                         },
@@ -1418,6 +1353,7 @@ fn parse_create_table_with_valid_options() {
                             name: Ident {
                                 value: "column_b".to_string(),
                                 quote_style: None,
+                                span: Span::empty(),
                             },
                             asc: Some(false),
                         },
@@ -1425,6 +1361,7 @@ fn parse_create_table_with_valid_options() {
                             name: Ident {
                                 value: "column_c".to_string(),
                                 quote_style: None,
+                                span: Span::empty(),
                             },
                             asc: None,
                         },
@@ -1438,6 +1375,7 @@ fn parse_create_table_with_valid_options() {
                     key: Ident {
                         value: "DISTRIBUTION".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     },
                     value: Expr::Function(
                         Function {
@@ -1446,6 +1384,7 @@ fn parse_create_table_with_valid_options() {
                                     Ident {
                                         value: "HASH".to_string(),
                                         quote_style: None,
+                                        span: Span::empty(),
                                     },
                                 ],
                             ),
@@ -1460,6 +1399,7 @@ fn parse_create_table_with_valid_options() {
                                                     Ident {
                                                         value: "column_a".to_string(),
                                                         quote_style: None,
+                                                        span: Span::empty(),
                                                     },
                                                 ),
                                             ),
@@ -1470,6 +1410,7 @@ fn parse_create_table_with_valid_options() {
                                                     Ident {
                                                         value: "column_b".to_string(),
                                                         quote_style: None,
+                                                        span: Span::empty(),
                                                     },
                                                 ),
                                             ),
@@ -1504,12 +1445,14 @@ fn parse_create_table_with_valid_options() {
                 name: ObjectName(vec![Ident {
                     value: "mytable".to_string(),
                     quote_style: None,
+                    span: Span::empty(),
                 },],),
                 columns: vec![
                     ColumnDef {
                         name: Ident {
                             value: "column_a".to_string(),
                             quote_style: None,
+                            span: Span::empty(),
                         },
                         data_type: Int(None,),
                         collation: None,
@@ -1519,6 +1462,7 @@ fn parse_create_table_with_valid_options() {
                         name: Ident {
                             value: "column_b".to_string(),
                             quote_style: None,
+                            span: Span::empty(),
                         },
                         data_type: Int(None,),
                         collation: None,
@@ -1528,6 +1472,7 @@ fn parse_create_table_with_valid_options() {
                         name: Ident {
                             value: "column_c".to_string(),
                             quote_style: None,
+                            span: Span::empty(),
                         },
                         data_type: Int(None,),
                         collation: None,
@@ -1669,11 +1614,13 @@ fn parse_create_table_with_identity_column() {
                 name: ObjectName(vec![Ident {
                     value: "mytable".to_string(),
                     quote_style: None,
+                    span: Span::empty(),
                 },],),
                 columns: vec![ColumnDef {
                     name: Ident {
                         value: "columnA".to_string(),
                         quote_style: None,
+                        span: Span::empty(),
                     },
                     data_type: Int(None,),
                     collation: None,

tests/sqlparser_mysql.rs

@@ -19,12 +19,14 @@
 //! Test SQL syntax specific to MySQL. The parser based on the generic dialect
 //! is also tested (on the inputs it can handle).
 
+use helpers::attached_token::AttachedToken;
 use matches::assert_matches;
 
 use sqlparser::ast::MysqlInsertPriority::{Delayed, HighPriority, LowPriority};
 use sqlparser::ast::*;
 use sqlparser::dialect::{GenericDialect, MySqlDialect};
 use sqlparser::parser::{ParserError, ParserOptions};
+use sqlparser::tokenizer::Span;
 use sqlparser::tokenizer::Token;
 use test_utils::*;
 
@@ -142,16 +144,19 @@ fn parse_flush() {
                 ObjectName(vec![
                     Ident {
                         value: "mek".to_string(),
-                        quote_style: Some('`')
+                        quote_style: Some('`'),
+                        span: Span::empty(),
                     },
                     Ident {
                         value: "table1".to_string(),
-                        quote_style: Some('`')
+                        quote_style: Some('`'),
+                        span: Span::empty(),
                     }
                 ]),
                 ObjectName(vec![Ident {
                     value: "table2".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }])
             ]
         }
@@ -179,16 +184,19 @@ fn parse_flush() {
                 ObjectName(vec![
                     Ident {
                         value: "mek".to_string(),
-                        quote_style: Some('`')
+                        quote_style: Some('`'),
+                        span: Span::empty(),
                     },
                     Ident {
                         value: "table1".to_string(),
-                        quote_style: Some('`')
+                        quote_style: Some('`'),
+                        span: Span::empty(),
                     }
                 ]),
                 ObjectName(vec![Ident {
                     value: "table2".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }])
             ]
         }
@@ -205,16 +213,19 @@ fn parse_flush() {
                 ObjectName(vec![
                     Ident {
                         value: "mek".to_string(),
-                        quote_style: Some('`')
+                        quote_style: Some('`'),
+                        span: Span::empty(),
                     },
                     Ident {
                         value: "table1".to_string(),
-                        quote_style: Some('`')
+                        quote_style: Some('`'),
+                        span: Span::empty(),
                     }
                 ]),
                 ObjectName(vec![Ident {
                     value: "table2".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }])
             ]
         }
@@ -1058,12 +1069,14 @@ fn parse_escaped_quote_identifiers_with_escape() {
         Statement::Query(Box::new(Query {
             with: None,
             body: Box::new(SetExpr::Select(Box::new(Select {
+                select_token: AttachedToken::empty(),
                 distinct: None,
                 top: None,
                 top_before_distinct: false,
                 projection: vec![SelectItem::UnnamedExpr(Expr::Identifier(Ident {
                     value: "quoted ` identifier".into(),
                     quote_style: Some('`'),
+                    span: Span::empty(),
                 }))],
                 into: None,
                 from: vec![],
@@ -1109,12 +1122,14 @@ fn parse_escaped_quote_identifiers_with_no_escape() {
         Statement::Query(Box::new(Query {
             with: None,
             body: Box::new(SetExpr::Select(Box::new(Select {
+                select_token: AttachedToken::empty(),
                 distinct: None,
                 top: None,
                 top_before_distinct: false,
                 projection: vec![SelectItem::UnnamedExpr(Expr::Identifier(Ident {
                     value: "quoted `` identifier".into(),
                     quote_style: Some('`'),
+                    span: Span::empty(),
                 }))],
                 into: None,
                 from: vec![],
@@ -1153,12 +1168,15 @@ fn parse_escaped_backticks_with_escape() {
         Statement::Query(Box::new(Query {
             with: None,
             body: Box::new(SetExpr::Select(Box::new(Select {
+                select_token: AttachedToken::empty(),
+
                 distinct: None,
                 top: None,
                 top_before_distinct: false,
                 projection: vec![SelectItem::UnnamedExpr(Expr::Identifier(Ident {
                     value: "`quoted identifier`".into(),
                     quote_style: Some('`'),
+                    span: Span::empty(),
                 }))],
                 into: None,
                 from: vec![],
@@ -1201,12 +1219,15 @@ fn parse_escaped_backticks_with_no_escape() {
         Statement::Query(Box::new(Query {
             with: None,
             body: Box::new(SetExpr::Select(Box::new(Select {
+                select_token: AttachedToken::empty(),
+
                 distinct: None,
                 top: None,
                 top_before_distinct: false,
                 projection: vec![SelectItem::UnnamedExpr(Expr::Identifier(Ident {
                     value: "``quoted identifier``".into(),
                     quote_style: Some('`'),
+                    span: Span::empty(),
                 }))],
                 into: None,
                 from: vec![],
@@ -1846,6 +1867,8 @@ fn parse_select_with_numeric_prefix_column_name() {
             assert_eq!(
                 q.body,
                 Box::new(SetExpr::Select(Box::new(Select {
+                    select_token: AttachedToken::empty(),
+
                     distinct: None,
                     top: None,
                     top_before_distinct: false,
@@ -1902,6 +1925,8 @@ fn parse_select_with_concatenation_of_exp_number_and_numeric_prefix_column() {
             assert_eq!(
                 q.body,
                 Box::new(SetExpr::Select(Box::new(Select {
+                    select_token: AttachedToken::empty(),
+
                     distinct: None,
                     top: None,
                     top_before_distinct: false,
@@ -2055,7 +2080,8 @@ fn parse_delete_with_order_by() {
                 vec![OrderByExpr {
                     expr: Expr::Identifier(Ident {
                         value: "id".to_owned(),
-                        quote_style: None
+                        quote_style: None,
+                        span: Span::empty(),
                     }),
                     asc: Some(false),
                     nulls_first: None,
@@ -2136,7 +2162,8 @@ fn parse_alter_table_add_column() {
                     },
                     column_position: Some(MySQLColumnPosition::After(Ident {
                         value: String::from("foo"),
-                        quote_style: None
+                        quote_style: None,
+                        span: Span::empty(),
                     })),
                 },]
             );
@@ -2187,6 +2214,7 @@ fn parse_alter_table_add_columns() {
                         column_position: Some(MySQLColumnPosition::After(Ident {
                             value: String::from("foo"),
                             quote_style: None,
+                            span: Span::empty(),
                         })),
                     },
                 ]
@@ -2247,6 +2275,7 @@ fn parse_alter_table_change_column() {
         column_position: Some(MySQLColumnPosition::After(Ident {
             value: String::from("foo"),
             quote_style: None,
+            span: Span::empty(),
         })),
     };
     let sql4 = "ALTER TABLE orders CHANGE COLUMN description desc TEXT NOT NULL AFTER foo";
@@ -2286,6 +2315,7 @@ fn parse_alter_table_change_column_with_column_position() {
         column_position: Some(MySQLColumnPosition::After(Ident {
             value: String::from("total_count"),
             quote_style: None,
+            span: Span::empty(),
         })),
     };
 
@@ -2342,6 +2372,7 @@ fn parse_alter_table_modify_column() {
         column_position: Some(MySQLColumnPosition::After(Ident {
             value: String::from("foo"),
             quote_style: None,
+            span: Span::empty(),
         })),
     };
     let sql4 = "ALTER TABLE orders MODIFY COLUMN description TEXT NOT NULL AFTER foo";
@@ -2379,6 +2410,7 @@ fn parse_alter_table_modify_column_with_column_position() {
         column_position: Some(MySQLColumnPosition::After(Ident {
             value: String::from("total_count"),
             quote_style: None,
+            span: Span::empty(),
         })),
     };
 
@@ -2397,6 +2429,8 @@ fn parse_alter_table_modify_column_with_column_position() {
 
 #[test]
 fn parse_substring_in_select() {
+    use sqlparser::tokenizer::Span;
+
     let sql = "SELECT DISTINCT SUBSTRING(description, 0, 1) FROM test";
     match mysql().one_statement_parses_to(
         sql,
@@ -2407,13 +2441,15 @@ fn parse_substring_in_select() {
                 Box::new(Query {
                     with: None,
                     body: Box::new(SetExpr::Select(Box::new(Select {
+                        select_token: AttachedToken::empty(),
                         distinct: Some(Distinct::Distinct),
                         top: None,
                         top_before_distinct: false,
                         projection: vec![SelectItem::UnnamedExpr(Expr::Substring {
                             expr: Box::new(Expr::Identifier(Ident {
                                 value: "description".to_string(),
-                                quote_style: None
+                                quote_style: None,
+                                span: Span::empty(),
                             })),
                             substring_from: Some(Box::new(Expr::Value(number("0")))),
                             substring_for: Some(Box::new(Expr::Value(number("1")))),
@@ -2424,7 +2460,8 @@ fn parse_substring_in_select() {
                             relation: TableFactor::Table {
                                 name: ObjectName(vec![Ident {
                                     value: "test".to_string(),
-                                    quote_style: None
+                                    quote_style: None,
+                                    span: Span::empty(),
                                 }]),
                                 alias: None,
                                 args: None,
@@ -2730,6 +2767,7 @@ fn parse_hex_string_introducer() {
         Statement::Query(Box::new(Query {
             with: None,
             body: Box::new(SetExpr::Select(Box::new(Select {
+                select_token: AttachedToken::empty(),
                 distinct: None,
                 top: None,
                 top_before_distinct: false,

tests/sqlparser_postgres.rs

@@ -21,6 +21,8 @@
 
 #[macro_use]
 mod test_utils;
+use helpers::attached_token::AttachedToken;
+use sqlparser::tokenizer::Span;
 use test_utils::*;
 
 use sqlparser::ast::*;
@@ -1163,6 +1165,7 @@ fn parse_copy_to() {
             source: CopySource::Query(Box::new(Query {
                 with: None,
                 body: Box::new(SetExpr::Select(Box::new(Select {
+                    select_token: AttachedToken::empty(),
                     distinct: None,
                     top: None,
                     top_before_distinct: false,
@@ -1172,6 +1175,7 @@ fn parse_copy_to() {
                             alias: Ident {
                                 value: "a".into(),
                                 quote_style: None,
+                                span: Span::empty(),
                             },
                         },
                         SelectItem::ExprWithAlias {
@@ -1179,6 +1183,7 @@ fn parse_copy_to() {
                             alias: Ident {
                                 value: "b".into(),
                                 quote_style: None,
+                                span: Span::empty(),
                             },
                         }
                     ],
@@ -1318,7 +1323,8 @@ fn parse_set() {
             variables: OneOrManyWithParens::One(ObjectName(vec![Ident::new("a")])),
             value: vec![Expr::Identifier(Ident {
                 value: "b".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             })],
         }
     );
@@ -1380,7 +1386,8 @@ fn parse_set() {
             ])),
             value: vec![Expr::Identifier(Ident {
                 value: "b".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             })],
         }
     );
@@ -1452,6 +1459,7 @@ fn parse_set_role() {
             role_name: Some(Ident {
                 value: "rolename".to_string(),
                 quote_style: Some('\"'),
+                span: Span::empty(),
             }),
         }
     );
@@ -1466,6 +1474,7 @@ fn parse_set_role() {
             role_name: Some(Ident {
                 value: "rolename".to_string(),
                 quote_style: Some('\''),
+                span: Span::empty(),
             }),
         }
     );
@@ -1765,7 +1774,8 @@ fn parse_pg_on_conflict() {
                     selection: Some(Expr::BinaryOp {
                         left: Box::new(Expr::Identifier(Ident {
                             value: "dsize".to_string(),
-                            quote_style: None
+                            quote_style: None,
+                            span: Span::empty(),
                         })),
                         op: BinaryOperator::Gt,
                         right: Box::new(Expr::Value(Value::Placeholder("$2".to_string())))
@@ -1802,7 +1812,8 @@ fn parse_pg_on_conflict() {
                     selection: Some(Expr::BinaryOp {
                         left: Box::new(Expr::Identifier(Ident {
                             value: "dsize".to_string(),
-                            quote_style: None
+                            quote_style: None,
+                            span: Span::empty(),
                         })),
                         op: BinaryOperator::Gt,
                         right: Box::new(Expr::Value(Value::Placeholder("$2".to_string())))
@@ -2105,14 +2116,16 @@ fn parse_array_index_expr() {
                 subscript: Box::new(Subscript::Index {
                     index: Expr::Identifier(Ident {
                         value: "baz".to_string(),
-                        quote_style: Some('"')
+                        quote_style: Some('"'),
+                        span: Span::empty(),
                     })
                 })
             }),
             subscript: Box::new(Subscript::Index {
                 index: Expr::Identifier(Ident {
                     value: "fooz".to_string(),
-                    quote_style: Some('"')
+                    quote_style: Some('"'),
+                    span: Span::empty(),
                 })
             })
         },
@@ -2504,6 +2517,7 @@ fn parse_array_subquery_expr() {
                     op: SetOperator::Union,
                     set_quantifier: SetQuantifier::None,
                     left: Box::new(SetExpr::Select(Box::new(Select {
+                        select_token: AttachedToken::empty(),
                         distinct: None,
                         top: None,
                         top_before_distinct: false,
@@ -2525,6 +2539,7 @@ fn parse_array_subquery_expr() {
                         connect_by: None,
                     }))),
                     right: Box::new(SetExpr::Select(Box::new(Select {
+                        select_token: AttachedToken::empty(),
                         distinct: None,
                         top: None,
                         top_before_distinct: false,
@@ -3123,6 +3138,7 @@ fn parse_custom_operator() {
             left: Box::new(Expr::Identifier(Ident {
                 value: "relname".into(),
                 quote_style: None,
+                span: Span::empty(),
             })),
             op: BinaryOperator::PGCustomBinaryOperator(vec![
                 "database".into(),
@@ -3142,6 +3158,7 @@ fn parse_custom_operator() {
             left: Box::new(Expr::Identifier(Ident {
                 value: "relname".into(),
                 quote_style: None,
+                span: Span::empty(),
             })),
             op: BinaryOperator::PGCustomBinaryOperator(vec!["pg_catalog".into(), "~".into()]),
             right: Box::new(Expr::Value(Value::SingleQuotedString("^(table)$".into())))
@@ -3157,6 +3174,7 @@ fn parse_custom_operator() {
             left: Box::new(Expr::Identifier(Ident {
                 value: "relname".into(),
                 quote_style: None,
+                span: Span::empty(),
             })),
             op: BinaryOperator::PGCustomBinaryOperator(vec!["~".into()]),
             right: Box::new(Expr::Value(Value::SingleQuotedString("^(table)$".into())))
@@ -3307,12 +3325,14 @@ fn parse_alter_role() {
         Statement::AlterRole {
             name: Ident {
                 value: "old_name".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             },
             operation: AlterRoleOperation::RenameRole {
                 role_name: Ident {
                     value: "new_name".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }
             },
         }
@@ -3324,7 +3344,8 @@ fn parse_alter_role() {
         Statement::AlterRole {
             name: Ident {
                 value: "role_name".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             },
             operation: AlterRoleOperation::WithOptions {
                 options: vec![
@@ -3353,7 +3374,8 @@ fn parse_alter_role() {
         Statement::AlterRole {
             name: Ident {
                 value: "role_name".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             },
             operation: AlterRoleOperation::WithOptions {
                 options: vec![
@@ -3376,12 +3398,14 @@ fn parse_alter_role() {
         Statement::AlterRole {
             name: Ident {
                 value: "role_name".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             },
             operation: AlterRoleOperation::Set {
                 config_name: ObjectName(vec![Ident {
                     value: "maintenance_work_mem".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]),
                 config_value: SetConfigValue::FromCurrent,
                 in_database: None
@@ -3395,17 +3419,20 @@ fn parse_alter_role() {
         [Statement::AlterRole {
             name: Ident {
                 value: "role_name".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             },
             operation: AlterRoleOperation::Set {
                 config_name: ObjectName(vec![Ident {
                     value: "maintenance_work_mem".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]),
                 config_value: SetConfigValue::Value(Expr::Value(number("100000"))),
                 in_database: Some(ObjectName(vec![Ident {
                     value: "database_name".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]))
             },
         }]
@@ -3417,17 +3444,20 @@ fn parse_alter_role() {
         Statement::AlterRole {
             name: Ident {
                 value: "role_name".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             },
             operation: AlterRoleOperation::Set {
                 config_name: ObjectName(vec![Ident {
                     value: "maintenance_work_mem".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]),
                 config_value: SetConfigValue::Value(Expr::Value(number("100000"))),
                 in_database: Some(ObjectName(vec![Ident {
                     value: "database_name".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]))
             },
         }
@@ -3439,17 +3469,20 @@ fn parse_alter_role() {
         Statement::AlterRole {
             name: Ident {
                 value: "role_name".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             },
             operation: AlterRoleOperation::Set {
                 config_name: ObjectName(vec![Ident {
                     value: "maintenance_work_mem".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]),
                 config_value: SetConfigValue::Default,
                 in_database: Some(ObjectName(vec![Ident {
                     value: "database_name".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]))
             },
         }
@@ -3461,7 +3494,8 @@ fn parse_alter_role() {
         Statement::AlterRole {
             name: Ident {
                 value: "role_name".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             },
             operation: AlterRoleOperation::Reset {
                 config_name: ResetConfig::ALL,
@@ -3476,16 +3510,19 @@ fn parse_alter_role() {
         Statement::AlterRole {
             name: Ident {
                 value: "role_name".into(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             },
             operation: AlterRoleOperation::Reset {
                 config_name: ResetConfig::ConfigName(ObjectName(vec![Ident {
                     value: "maintenance_work_mem".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }])),
                 in_database: Some(ObjectName(vec![Ident {
                     value: "database_name".into(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]))
             },
         }
@@ -3630,7 +3667,8 @@ fn parse_drop_function() {
             func_desc: vec![FunctionDesc {
                 name: ObjectName(vec![Ident {
                     value: "test_func".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]),
                 args: None
             }],
@@ -3646,7 +3684,8 @@ fn parse_drop_function() {
             func_desc: vec![FunctionDesc {
                 name: ObjectName(vec![Ident {
                     value: "test_func".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]),
                 args: Some(vec![
                     OperateFunctionArg::with_name("a", DataType::Integer(None)),
@@ -3671,7 +3710,8 @@ fn parse_drop_function() {
                 FunctionDesc {
                     name: ObjectName(vec![Ident {
                         value: "test_func1".to_string(),
-                        quote_style: None
+                        quote_style: None,
+                        span: Span::empty(),
                     }]),
                     args: Some(vec![
                         OperateFunctionArg::with_name("a", DataType::Integer(None)),
@@ -3689,7 +3729,8 @@ fn parse_drop_function() {
                 FunctionDesc {
                     name: ObjectName(vec![Ident {
                         value: "test_func2".to_string(),
-                        quote_style: None
+                        quote_style: None,
+                        span: Span::empty(),
                     }]),
                     args: Some(vec![
                         OperateFunctionArg::with_name("a", DataType::Varchar(None)),
@@ -3720,7 +3761,8 @@ fn parse_drop_procedure() {
             proc_desc: vec![FunctionDesc {
                 name: ObjectName(vec![Ident {
                     value: "test_proc".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]),
                 args: None
             }],
@@ -3736,7 +3778,8 @@ fn parse_drop_procedure() {
             proc_desc: vec![FunctionDesc {
                 name: ObjectName(vec![Ident {
                     value: "test_proc".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }]),
                 args: Some(vec![
                     OperateFunctionArg::with_name("a", DataType::Integer(None)),
@@ -3761,7 +3804,8 @@ fn parse_drop_procedure() {
                 FunctionDesc {
                     name: ObjectName(vec![Ident {
                         value: "test_proc1".to_string(),
-                        quote_style: None
+                        quote_style: None,
+                        span: Span::empty(),
                     }]),
                     args: Some(vec![
                         OperateFunctionArg::with_name("a", DataType::Integer(None)),
@@ -3779,7 +3823,8 @@ fn parse_drop_procedure() {
                 FunctionDesc {
                     name: ObjectName(vec![Ident {
                         value: "test_proc2".to_string(),
-                        quote_style: None
+                        quote_style: None,
+                        span: Span::empty(),
                     }]),
                     args: Some(vec![
                         OperateFunctionArg::with_name("a", DataType::Varchar(None)),
@@ -3860,6 +3905,7 @@ fn parse_dollar_quoted_string() {
             alias: Ident {
                 value: "col_name".into(),
                 quote_style: None,
+                span: Span::empty(),
             },
         }
     );
@@ -4204,20 +4250,24 @@ fn test_simple_postgres_insert_with_alias() {
             into: true,
             table_name: ObjectName(vec![Ident {
                 value: "test_tables".to_string(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             }]),
             table_alias: Some(Ident {
                 value: "test_table".to_string(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             }),
             columns: vec![
                 Ident {
                     value: "id".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 },
                 Ident {
                     value: "a".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }
             ],
             overwrite: false,
@@ -4267,20 +4317,24 @@ fn test_simple_postgres_insert_with_alias() {
             into: true,
             table_name: ObjectName(vec![Ident {
                 value: "test_tables".to_string(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             }]),
             table_alias: Some(Ident {
                 value: "test_table".to_string(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             }),
             columns: vec![
                 Ident {
                     value: "id".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 },
                 Ident {
                     value: "a".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }
             ],
             overwrite: false,
@@ -4332,20 +4386,24 @@ fn test_simple_insert_with_quoted_alias() {
             into: true,
             table_name: ObjectName(vec![Ident {
                 value: "test_tables".to_string(),
-                quote_style: None
+                quote_style: None,
+                span: Span::empty(),
             }]),
             table_alias: Some(Ident {
                 value: "Test_Table".to_string(),
-                quote_style: Some('"')
+                quote_style: Some('"'),
+                span: Span::empty(),
             }),
             columns: vec![
                 Ident {
                     value: "id".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 },
                 Ident {
                     value: "a".to_string(),
-                    quote_style: None
+                    quote_style: None,
+                    span: Span::empty(),
                 }
             ],
             overwrite: false,
@@ -5017,6 +5075,7 @@ fn check_arrow_precedence(sql: &str, arrow_operator: BinaryOperator) {
                 left: Box::new(Expr::Identifier(Ident {
                     value: "foo".to_string(),
                     quote_style: None,
+                    span: Span::empty(),
                 })),
                 op: arrow_operator,
                 right: Box::new(Expr::Value(Value::SingleQuotedString("bar".to_string()))),
@@ -5047,6 +5106,7 @@ fn arrow_cast_precedence() {
             left: Box::new(Expr::Identifier(Ident {
                 value: "foo".to_string(),
                 quote_style: None,
+                span: Span::empty(),
             })),
             op: BinaryOperator::Arrow,
             right: Box::new(Expr::Cast {

tests/sqlparser_redshift.rs

@@ -18,6 +18,7 @@
 #[macro_use]
 mod test_utils;
 
+use sqlparser::tokenizer::Span;
 use test_utils::*;
 
 use sqlparser::ast::*;
@@ -31,7 +32,8 @@ fn test_square_brackets_over_db_schema_table_name() {
         select.projection[0],
         SelectItem::UnnamedExpr(Expr::Identifier(Ident {
             value: "col1".to_string(),
-            quote_style: Some('[')
+            quote_style: Some('['),
+            span: Span::empty(),
         })),
     );
     assert_eq!(
@@ -41,11 +43,13 @@ fn test_square_brackets_over_db_schema_table_name() {
                 name: ObjectName(vec![
                     Ident {
                         value: "test_schema".to_string(),
-                        quote_style: Some('[')
+                        quote_style: Some('['),
+                        span: Span::empty(),
                     },
                     Ident {
                         value: "test_table".to_string(),
-                        quote_style: Some('[')
+                        quote_style: Some('['),
+                        span: Span::empty(),
                     }
                 ]),
                 alias: None,
@@ -79,7 +83,8 @@ fn test_double_quotes_over_db_schema_table_name() {
         select.projection[0],
         SelectItem::UnnamedExpr(Expr::Identifier(Ident {
             value: "col1".to_string(),
-            quote_style: Some('"')
+            quote_style: Some('"'),
+            span: Span::empty(),
         })),
     );
     assert_eq!(
@@ -89,11 +94,13 @@ fn test_double_quotes_over_db_schema_table_name() {
                 name: ObjectName(vec![
                     Ident {
                         value: "test_schema".to_string(),
-                        quote_style: Some('"')
+                        quote_style: Some('"'),
+                        span: Span::empty(),
                     },
                     Ident {
                         value: "test_table".to_string(),
-                        quote_style: Some('"')
+                        quote_style: Some('"'),
+                        span: Span::empty(),
                     }
                 ]),
                 alias: None,

tests/sqlparser_snowflake.rs

@@ -2762,7 +2762,9 @@ fn parse_view_column_descriptions() {
 
 #[test]
 fn test_parentheses_overflow() {
-    let max_nesting_level: usize = 30;
+    // TODO: increase / improve after we fix the recursion limit
+    // for real (see https://github.com/apache/datafusion-sqlparser-rs/issues/984)
+    let max_nesting_level: usize = 25;
 
     // Verify the recursion check is not too wasteful... (num of parentheses - 2 is acceptable)
     let slack = 2;