Add support for EXECUTE IMMEDIATE (#1717)

src/ast/mod.rs

@@ -3269,18 +3269,21 @@ pub enum Statement {
     /// Note: this is a PostgreSQL-specific statement.
     Deallocate { name: Ident, prepare: bool },
     /// ```sql
-    /// EXECUTE name [ ( parameter [, ...] ) ] [USING <expr>]
+    /// An `EXECUTE` statement
     /// ```
     ///
-    /// Note: this statement is supported by Postgres and MSSQL, with slight differences in syntax.
-    ///
     /// Postgres: <https://www.postgresql.org/docs/current/sql-execute.html>
     /// MSSQL: <https://learn.microsoft.com/en-us/sql/relational-databases/stored-procedures/execute-a-stored-procedure>
+    /// BigQuery: <https://cloud.google.com/bigquery/docs/reference/standard-sql/procedural-language#execute_immediate>
+    /// Snowflake: <https://docs.snowflake.com/en/sql-reference/sql/execute-immediate>
     Execute {
-        name: ObjectName,
+        name: Option<ObjectName>,
         parameters: Vec<Expr>,
         has_parentheses: bool,
-        using: Vec<Expr>,
+        /// Is this an `EXECUTE IMMEDIATE`
+        immediate: bool,
+        into: Vec<Ident>,
+        using: Vec<ExprWithAlias>,
     },
     /// ```sql
     /// PREPARE name [ ( data_type [, ...] ) ] AS statement
@@ -4889,6 +4892,8 @@ impl fmt::Display for Statement {
                 name,
                 parameters,
                 has_parentheses,
+                immediate,
+                into,
                 using,
             } => {
                 let (open, close) = if *has_parentheses {
@@ -4896,11 +4901,17 @@ impl fmt::Display for Statement {
                 } else {
                     (if parameters.is_empty() { "" } else { " " }, "")
                 };
-                write!(
-                    f,
-                    "EXECUTE {name}{open}{}{close}",
-                    display_comma_separated(parameters),
-                )?;
+                write!(f, "EXECUTE")?;
+                if *immediate {
+                    write!(f, " IMMEDIATE")?;
+                }
+                if let Some(name) = name {
+                    write!(f, " {name}")?;
+                }
+                write!(f, "{open}{}{close}", display_comma_separated(parameters),)?;
+                if !into.is_empty() {
+                    write!(f, " INTO {}", display_comma_separated(into))?;
+                }
                 if !using.is_empty() {
                     write!(f, " USING {}", display_comma_separated(using))?;
                 };

src/dialect/bigquery.rs

@@ -110,6 +110,11 @@ impl Dialect for BigQueryDialect {
         true
     }
 
+    /// See <https://cloud.google.com/bigquery/docs/reference/standard-sql/procedural-language#execute_immediate>
+    fn supports_execute_immediate(&self) -> bool {
+        true
+    }
+
     // See <https://cloud.google.com/bigquery/docs/access-historical-data>
     fn supports_timestamp_versioning(&self) -> bool {
         true

src/dialect/mod.rs

@@ -261,6 +261,11 @@ pub trait Dialect: Debug + Any {
         false
     }
 
+    /// Returns true if the dialect supports `EXECUTE IMMEDIATE` statements.
+    fn supports_execute_immediate(&self) -> bool {
+        false
+    }
+
     /// Returns true if the dialect supports the MATCH_RECOGNIZE operation.
     fn supports_match_recognize(&self) -> bool {
         false

src/dialect/snowflake.rs

@@ -96,6 +96,11 @@ impl Dialect for SnowflakeDialect {
         true
     }
 
+    /// See <https://docs.snowflake.com/en/sql-reference/sql/execute-immediate>
+    fn supports_execute_immediate(&self) -> bool {
+        true
+    }
+
     fn supports_match_recognize(&self) -> bool {
         true
     }

src/parser/mod.rs

@@ -13849,7 +13849,14 @@ impl<'a> Parser<'a> {
     }
 
     pub fn parse_execute(&mut self) -> Result<Statement, ParserError> {
-        let name = self.parse_object_name(false)?;
+        let name = if self.dialect.supports_execute_immediate()
+            && self.parse_keyword(Keyword::IMMEDIATE)
+        {
+            None
+        } else {
+            let name = self.parse_object_name(false)?;
+            Some(name)
+        };
 
         let has_parentheses = self.consume_token(&Token::LParen);
 
@@ -13866,19 +13873,24 @@ impl<'a> Parser<'a> {
             self.expect_token(&Token::RParen)?;
         }
 
-        let mut using = vec![];
-        if self.parse_keyword(Keyword::USING) {
-            using.push(self.parse_expr()?);
+        let into = if self.parse_keyword(Keyword::INTO) {
+            self.parse_comma_separated(Self::parse_identifier)?
+        } else {
+            vec![]
+        };
 
-            while self.consume_token(&Token::Comma) {
-                using.push(self.parse_expr()?);
-            }
+        let using = if self.parse_keyword(Keyword::USING) {
+            self.parse_comma_separated(Self::parse_expr_with_alias)?
+        } else {
+            vec![]
         };
 
         Ok(Statement::Execute {
+            immediate: name.is_none(),
             name,
             parameters,
             has_parentheses,
+            into,
             using,
         })
     }

tests/sqlparser_common.rs

@@ -10745,7 +10745,7 @@ fn parse_call() {
 #[test]
 fn parse_execute_stored_procedure() {
     let expected = Statement::Execute {
-        name: ObjectName::from(vec![
+        name: Some(ObjectName::from(vec![
             Ident {
                 value: "my_schema".to_string(),
                 quote_style: None,
@@ -10756,13 +10756,15 @@ fn parse_execute_stored_procedure() {
                 quote_style: None,
                 span: Span::empty(),
             },
-        ]),
+        ])),
         parameters: vec![
             Expr::Value(Value::NationalStringLiteral("param1".to_string())),
             Expr::Value(Value::NationalStringLiteral("param2".to_string())),
         ],
         has_parentheses: false,
+        immediate: false,
         using: vec![],
+        into: vec![],
     };
     assert_eq!(
         // Microsoft SQL Server does not use parentheses around arguments for EXECUTE
@@ -10779,6 +10781,41 @@ fn parse_execute_stored_procedure() {
     );
 }
 
+#[test]
+fn parse_execute_immediate() {
+    let dialects = all_dialects_where(|d| d.supports_execute_immediate());
+
+    let expected = Statement::Execute {
+        parameters: vec![Expr::Value(Value::SingleQuotedString(
+            "SELECT 1".to_string(),
+        ))],
+        immediate: true,
+        using: vec![ExprWithAlias {
+            expr: Expr::Value(number("1")),
+            alias: Some(Ident::new("b")),
+        }],
+        into: vec![Ident::new("a")],
+        name: None,
+        has_parentheses: false,
+    };
+
+    let stmt = dialects.verified_stmt("EXECUTE IMMEDIATE 'SELECT 1' INTO a USING 1 AS b");
+    assert_eq!(expected, stmt);
+
+    dialects.verified_stmt("EXECUTE IMMEDIATE 'SELECT 1' INTO a, b USING 1 AS x, y");
+    dialects.verified_stmt("EXECUTE IMMEDIATE 'SELECT 1' USING 1 AS x, y");
+    dialects.verified_stmt("EXECUTE IMMEDIATE 'SELECT 1' INTO a, b");
+    dialects.verified_stmt("EXECUTE IMMEDIATE 'SELECT 1'");
+    dialects.verified_stmt("EXECUTE 'SELECT 1'");
+
+    assert_eq!(
+        ParserError::ParserError("Expected: identifier, found: ,".to_string()),
+        dialects
+            .parse_sql_statements("EXECUTE IMMEDIATE 'SELECT 1' USING 1 AS, y")
+            .unwrap_err()
+    );
+}
+
 #[test]
 fn parse_create_table_collate() {
     pg_and_generic().verified_stmt("CREATE TABLE tbl (foo INT, bar TEXT COLLATE \"de_DE\")");

tests/sqlparser_postgres.rs

@@ -1659,10 +1659,12 @@ fn parse_execute() {
     assert_eq!(
         stmt,
         Statement::Execute {
-            name: ObjectName::from(vec!["a".into()]),
+            name: Some(ObjectName::from(vec!["a".into()])),
             parameters: vec![],
             has_parentheses: false,
-            using: vec![]
+            using: vec![],
+            immediate: false,
+            into: vec![]
         }
     );
 
@@ -1670,13 +1672,15 @@ fn parse_execute() {
     assert_eq!(
         stmt,
         Statement::Execute {
-            name: ObjectName::from(vec!["a".into()]),
+            name: Some(ObjectName::from(vec!["a".into()])),
             parameters: vec![
                 Expr::Value(number("1")),
                 Expr::Value(Value::SingleQuotedString("t".to_string()))
             ],
             has_parentheses: true,
-            using: vec![]
+            using: vec![],
+            immediate: false,
+            into: vec![]
         }
     );
 
@@ -1685,23 +1689,31 @@ fn parse_execute() {
     assert_eq!(
         stmt,
         Statement::Execute {
-            name: ObjectName::from(vec!["a".into()]),
+            name: Some(ObjectName::from(vec!["a".into()])),
             parameters: vec![],
             has_parentheses: false,
             using: vec![
-                Expr::Cast {
-                    kind: CastKind::Cast,
-                    expr: Box::new(Expr::Value(Value::Number("1337".parse().unwrap(), false))),
-                    data_type: DataType::SmallInt(None),
-                    format: None
+                ExprWithAlias {
+                    expr: Expr::Cast {
+                        kind: CastKind::Cast,
+                        expr: Box::new(Expr::Value(Value::Number("1337".parse().unwrap(), false))),
+                        data_type: DataType::SmallInt(None),
+                        format: None
+                    },
+                    alias: None
                 },
-                Expr::Cast {
-                    kind: CastKind::Cast,
-                    expr: Box::new(Expr::Value(Value::Number("7331".parse().unwrap(), false))),
-                    data_type: DataType::SmallInt(None),
-                    format: None
+                ExprWithAlias {
+                    expr: Expr::Cast {
+                        kind: CastKind::Cast,
+                        expr: Box::new(Expr::Value(Value::Number("7331".parse().unwrap(), false))),
+                        data_type: DataType::SmallInt(None),
+                        format: None
+                    },
+                    alias: None
                 },
-            ]
+            ],
+            immediate: false,
+            into: vec![]
         }
     );
 }