mirrors/datafusion-sqlparse
1
0
Fork 0
mirror of https://github.com/apache/datafusion-sqlparser-rs.git synced 2025-07-16 21:04:59 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1
datafusion-sqlparse/tests/sqlparser_common.rs
Nikhil Benesch 1cef68e510
Support UPDATE statements 
Fix #10.
2019-06-03 00:21:23 -04:00

1809 lines
56 KiB
Rust
Raw Blame History

#![warn(clippy::all)]
//! Test SQL syntax, which all sqlparser dialects must parse in the same way.
//!
//! Note that it does not mean all SQL here is valid in all the dialects, only
//! that 1) it's either standard or widely supported and 2) it can be parsed by
//! sqlparser regardless of the chosen dialect (i.e. it doesn't conflict with
//! dialect-specific parsing rules).
use matches::assert_matches;
use sqlparser::sqlast::*;
use sqlparser::sqlparser::*;
use sqlparser::test_utils::{all_dialects, expr_from_projection, only};
#[test]
fn parse_insert_values() {
let sql = "INSERT INTO customer VALUES(1, 2, 3)";
check_one(sql, "customer", vec![]);
let sql = "INSERT INTO public.customer VALUES(1, 2, 3)";
check_one(sql, "public.customer", vec![]);
let sql = "INSERT INTO db.public.customer VALUES(1, 2, 3)";
check_one(sql, "db.public.customer", vec![]);
let sql = "INSERT INTO public.customer (id, name, active) VALUES(1, 2, 3)";
check_one(
sql,
"public.customer",
vec!["id".to_string(), "name".to_string(), "active".to_string()],
);
fn check_one(sql: &str, expected_table_name: &str, expected_columns: Vec<String>) {
match verified_stmt(sql) {
SQLStatement::SQLInsert {
table_name,
columns,
values,
..
} => {
assert_eq!(table_name.to_string(), expected_table_name);
assert_eq!(columns, expected_columns);
assert_eq!(
vec![vec![
ASTNode::SQLValue(Value::Long(1)),
ASTNode::SQLValue(Value::Long(2)),
ASTNode::SQLValue(Value::Long(3))
]],
values
);
}
_ => unreachable!(),
}
}
}
#[test]
fn parse_insert_invalid() {
let sql = "INSERT public.customer (id, name, active) VALUES (1, 2, 3)";
let res = parse_sql_statements(sql);
assert_eq!(
ParserError::ParserError("Expected INTO, found: public".to_string()),
res.unwrap_err()
);
}
#[test]
fn parse_update() {
let sql = "UPDATE t SET a = 1, b = 2, c = 3 WHERE d";
match verified_stmt(sql) {
SQLStatement::SQLUpdate {
table_name,
assignments,
selection,
..
} => {
assert_eq!(table_name.to_string(), "t".to_string());
assert_eq!(
assignments,
vec![
SQLAssignment {
id: "a".into(),
value: ASTNode::SQLValue(Value::Long(1)),
},
SQLAssignment {
id: "b".into(),
value: ASTNode::SQLValue(Value::Long(2)),
},
SQLAssignment {
id: "c".into(),
value: ASTNode::SQLValue(Value::Long(3)),
},
]
);
assert_eq!(selection.unwrap(), ASTNode::SQLIdentifier("d".into()));
}
_ => unreachable!(),
}
verified_stmt("UPDATE t SET a = 1, a = 2, a = 3");
let sql = "UPDATE t WHERE 1";
let res = parse_sql_statements(sql);
assert_eq!(
ParserError::ParserError("Expected SET, found: WHERE".to_string()),
res.unwrap_err()
);
let sql = "UPDATE t SET a = 1 extrabadstuff";
let res = parse_sql_statements(sql);
assert_eq!(
ParserError::ParserError("Expected end of statement, found: extrabadstuff".to_string()),
res.unwrap_err()
);
}
#[test]
fn parse_invalid_table_name() {
let ast = all_dialects().run_parser_method("db.public..customer", Parser::parse_object_name);
assert!(ast.is_err());
}
#[test]
fn parse_no_table_name() {
let ast = all_dialects().run_parser_method("", Parser::parse_object_name);
assert!(ast.is_err());
}
#[test]
fn parse_delete_statement() {
let sql = "DELETE FROM \"table\"";
match verified_stmt(sql) {
SQLStatement::SQLDelete { table_name, .. } => {
assert_eq!(SQLObjectName(vec!["\"table\"".to_string()]), table_name);
}
_ => unreachable!(),
}
}
#[test]
fn parse_where_delete_statement() {
use self::ASTNode::*;
use self::SQLOperator::*;
let sql = "DELETE FROM foo WHERE name = 5";
match verified_stmt(sql) {
SQLStatement::SQLDelete {
table_name,
selection,
..
} => {
assert_eq!(SQLObjectName(vec!["foo".to_string()]), table_name);
assert_eq!(
SQLBinaryExpr {
left: Box::new(SQLIdentifier("name".to_string())),
op: Eq,
right: Box::new(SQLValue(Value::Long(5))),
},
selection.unwrap(),
);
}
_ => unreachable!(),
}
}
#[test]
fn parse_simple_select() {
let sql = "SELECT id, fname, lname FROM customer WHERE id = 1 LIMIT 5";
let select = verified_only_select(sql);
assert_eq!(false, select.distinct);
assert_eq!(3, select.projection.len());
let select = verified_query(sql);
assert_eq!(Some(ASTNode::SQLValue(Value::Long(5))), select.limit);
}
#[test]
fn parse_select_with_limit_but_no_where() {
let sql = "SELECT id, fname, lname FROM customer LIMIT 5";
let select = verified_only_select(sql);
assert_eq!(false, select.distinct);
assert_eq!(3, select.projection.len());
let select = verified_query(sql);
assert_eq!(Some(ASTNode::SQLValue(Value::Long(5))), select.limit);
}
#[test]
fn parse_select_distinct() {
let sql = "SELECT DISTINCT name FROM customer";
let select = verified_only_select(sql);
assert_eq!(true, select.distinct);
assert_eq!(
&SQLSelectItem::UnnamedExpression(ASTNode::SQLIdentifier("name".to_string())),
only(&select.projection)
);
}
#[test]
fn parse_select_all() {
one_statement_parses_to("SELECT ALL name FROM customer", "SELECT name FROM customer");
}
#[test]
fn parse_select_all_distinct() {
let result = parse_sql_statements("SELECT ALL DISTINCT name FROM customer");
assert_eq!(
ParserError::ParserError("Cannot specify both ALL and DISTINCT in SELECT".to_string()),
result.unwrap_err(),
);
}
#[test]
fn parse_select_wildcard() {
let sql = "SELECT * FROM foo";
let select = verified_only_select(sql);
assert_eq!(&SQLSelectItem::Wildcard, only(&select.projection));
let sql = "SELECT foo.* FROM foo";
let select = verified_only_select(sql);
assert_eq!(
&SQLSelectItem::QualifiedWildcard(SQLObjectName(vec!["foo".to_string()])),
only(&select.projection)
);
let sql = "SELECT myschema.mytable.* FROM myschema.mytable";
let select = verified_only_select(sql);
assert_eq!(
&SQLSelectItem::QualifiedWildcard(SQLObjectName(vec![
"myschema".to_string(),
"mytable".to_string(),
])),
only(&select.projection)
);
}
#[test]
fn parse_count_wildcard() {
verified_only_select(
"SELECT COUNT(Employee.*) FROM Order JOIN Employee ON Order.employee = Employee.id",
);
}
#[test]
fn parse_column_aliases() {
let sql = "SELECT a.col + 1 AS newname FROM foo AS a";
let select = verified_only_select(sql);
if let SQLSelectItem::ExpressionWithAlias {
expr: ASTNode::SQLBinaryExpr {
ref op, ref right, ..
},
ref alias,
} = only(&select.projection)
{
assert_eq!(&SQLOperator::Plus, op);
assert_eq!(&ASTNode::SQLValue(Value::Long(1)), right.as_ref());
assert_eq!("newname", alias);
} else {
panic!("Expected ExpressionWithAlias")
}
// alias without AS is parsed correctly:
one_statement_parses_to("SELECT a.col + 1 newname FROM foo AS a", &sql);
}
#[test]
fn test_eof_after_as() {
let res = parse_sql_statements("SELECT foo AS");
assert_eq!(
ParserError::ParserError("Expected an identifier after AS, found: EOF".to_string()),
res.unwrap_err()
);
let res = parse_sql_statements("SELECT 1 FROM foo AS");
assert_eq!(
ParserError::ParserError("Expected an identifier after AS, found: EOF".to_string()),
res.unwrap_err()
);
}
#[test]
fn parse_select_count_wildcard() {
let sql = "SELECT COUNT(*) FROM customer";
let select = verified_only_select(sql);
assert_eq!(
&ASTNode::SQLFunction {
name: SQLObjectName(vec!["COUNT".to_string()]),
args: vec![ASTNode::SQLWildcard],
over: None,
distinct: false,
},
expr_from_projection(only(&select.projection))
);
}
#[test]
fn parse_select_count_distinct() {
let sql = "SELECT COUNT(DISTINCT + x) FROM customer";
let select = verified_only_select(sql);
assert_eq!(
&ASTNode::SQLFunction {
name: SQLObjectName(vec!["COUNT".to_string()]),
args: vec![ASTNode::SQLUnary {
operator: SQLOperator::Plus,
expr: Box::new(ASTNode::SQLIdentifier("x".to_string()))
}],
over: None,
distinct: true,
},
expr_from_projection(only(&select.projection))
);
one_statement_parses_to(
"SELECT COUNT(ALL + x) FROM customer",
"SELECT COUNT(+ x) FROM customer",
);
let sql = "SELECT COUNT(ALL DISTINCT + x) FROM customer";
let res = parse_sql_statements(sql);
assert_eq!(
ParserError::ParserError(
"Cannot specify both ALL and DISTINCT in function: COUNT".to_string()
),
res.unwrap_err()
);
}
#[test]
fn parse_not() {
let sql = "SELECT id FROM customer WHERE NOT salary = ''";
let _ast = verified_only_select(sql);
//TODO: add assertions
}
#[test]
fn parse_invalid_infix_not() {
let res = parse_sql_statements("SELECT c FROM t WHERE c NOT (");
assert_eq!(
ParserError::ParserError("Expected IN or BETWEEN after NOT, found: (".to_string()),
res.unwrap_err(),
);
}
#[test]
fn parse_collate() {
let sql = "SELECT name COLLATE \"de_DE\" FROM customer";
assert_matches!(
only(&all_dialects().verified_only_select(sql).projection),
SQLSelectItem::UnnamedExpression(ASTNode::SQLCollate { .. })
);
}
#[test]
fn parse_select_string_predicate() {
let sql = "SELECT id, fname, lname FROM customer \
WHERE salary <> 'Not Provided' AND salary <> ''";
let _ast = verified_only_select(sql);
//TODO: add assertions
}
#[test]
fn parse_projection_nested_type() {
let sql = "SELECT customer.address.state FROM foo";
let _ast = verified_only_select(sql);
//TODO: add assertions
}
#[test]
fn parse_escaped_single_quote_string_predicate() {
use self::ASTNode::*;
use self::SQLOperator::*;
let sql = "SELECT id, fname, lname FROM customer \
WHERE salary <> 'Jim''s salary'";
let ast = verified_only_select(sql);
assert_eq!(
Some(SQLBinaryExpr {
left: Box::new(SQLIdentifier("salary".to_string())),
op: NotEq,
right: Box::new(SQLValue(Value::SingleQuotedString(
"Jim's salary".to_string()
)))
}),
ast.selection,
);
}
#[test]
fn parse_compound_expr_1() {
use self::ASTNode::*;
use self::SQLOperator::*;
let sql = "a + b * c";
assert_eq!(
SQLBinaryExpr {
left: Box::new(SQLIdentifier("a".to_string())),
op: Plus,
right: Box::new(SQLBinaryExpr {
left: Box::new(SQLIdentifier("b".to_string())),
op: Multiply,
right: Box::new(SQLIdentifier("c".to_string()))
})
},
verified_expr(sql)
);
}
#[test]
fn parse_compound_expr_2() {
use self::ASTNode::*;
use self::SQLOperator::*;
let sql = "a * b + c";
assert_eq!(
SQLBinaryExpr {
left: Box::new(SQLBinaryExpr {
left: Box::new(SQLIdentifier("a".to_string())),
op: Multiply,
right: Box::new(SQLIdentifier("b".to_string()))
}),
op: Plus,
right: Box::new(SQLIdentifier("c".to_string()))
},
verified_expr(sql)
);
}
#[test]
fn parse_unary_math() {
use self::ASTNode::*;
use self::SQLOperator::*;
let sql = "- a + - b";
assert_eq!(
SQLBinaryExpr {
left: Box::new(SQLUnary {
operator: Minus,
expr: Box::new(SQLIdentifier("a".to_string())),
}),
op: Plus,
right: Box::new(SQLUnary {
operator: Minus,
expr: Box::new(SQLIdentifier("b".to_string())),
}),
},
verified_expr(sql)
);
}
#[test]
fn parse_is_null() {
use self::ASTNode::*;
let sql = "a IS NULL";
assert_eq!(
SQLIsNull(Box::new(SQLIdentifier("a".to_string()))),
verified_expr(sql)
);
}
#[test]
fn parse_is_not_null() {
use self::ASTNode::*;
let sql = "a IS NOT NULL";
assert_eq!(
SQLIsNotNull(Box::new(SQLIdentifier("a".to_string()))),
verified_expr(sql)
);
}
#[test]
fn parse_not_precedence() {
use self::ASTNode::*;
// NOT has higher precedence than OR/AND, so the following must parse as (NOT true) OR true
let sql = "NOT true OR true";
assert_matches!(verified_expr(sql), SQLBinaryExpr {
op: SQLOperator::Or,
..
});
// But NOT has lower precedence than comparison operators, so the following parses as NOT (a IS NULL)
let sql = "NOT a IS NULL";
assert_matches!(verified_expr(sql), SQLUnary {
operator: SQLOperator::Not,
..
});
// NOT has lower precedence than BETWEEN, so the following parses as NOT (1 NOT BETWEEN 1 AND 2)
let sql = "NOT 1 NOT BETWEEN 1 AND 2";
assert_eq!(
verified_expr(sql),
SQLUnary {
operator: SQLOperator::Not,
expr: Box::new(SQLBetween {
expr: Box::new(SQLValue(Value::Long(1))),
low: Box::new(SQLValue(Value::Long(1))),
high: Box::new(SQLValue(Value::Long(2))),
negated: true,
}),
},
);
// NOT has lower precedence than LIKE, so the following parses as NOT ('a' NOT LIKE 'b')
let sql = "NOT 'a' NOT LIKE 'b'";
assert_eq!(
verified_expr(sql),
SQLUnary {
operator: SQLOperator::Not,
expr: Box::new(SQLBinaryExpr {
left: Box::new(SQLValue(Value::SingleQuotedString("a".into()))),
op: SQLOperator::NotLike,
right: Box::new(SQLValue(Value::SingleQuotedString("b".into()))),
}),
},
);
// NOT has lower precedence than IN, so the following parses as NOT (a NOT IN 'a')
let sql = "NOT a NOT IN ('a')";
assert_eq!(
verified_expr(sql),
SQLUnary {
operator: SQLOperator::Not,
expr: Box::new(SQLInList {
expr: Box::new(SQLIdentifier("a".into())),
list: vec![SQLValue(Value::SingleQuotedString("a".into()))],
negated: true,
}),
},
);
}
#[test]
fn parse_like() {
fn chk(negated: bool) {
let sql = &format!(
"SELECT * FROM customers WHERE name {}LIKE '%a'",
if negated { "NOT " } else { "" }
);
let select = verified_only_select(sql);
assert_eq!(
ASTNode::SQLBinaryExpr {
left: Box::new(ASTNode::SQLIdentifier("name".to_string())),
op: if negated {
SQLOperator::NotLike
} else {
SQLOperator::Like
},
right: Box::new(ASTNode::SQLValue(Value::SingleQuotedString(
"%a".to_string()
))),
},
select.selection.unwrap()
);
// This statement tests that LIKE and NOT LIKE have the same precedence.
// This was previously mishandled (#81).
let sql = &format!(
"SELECT * FROM customers WHERE name {}LIKE '%a' IS NULL",
if negated { "NOT " } else { "" }
);
let select = verified_only_select(sql);
assert_eq!(
ASTNode::SQLIsNull(Box::new(ASTNode::SQLBinaryExpr {
left: Box::new(ASTNode::SQLIdentifier("name".to_string())),
op: if negated {
SQLOperator::NotLike
} else {
SQLOperator::Like
},
right: Box::new(ASTNode::SQLValue(Value::SingleQuotedString(
"%a".to_string()
))),
})),
select.selection.unwrap()
);
}
chk(false);
chk(true);
}
#[test]
fn parse_in_list() {
fn chk(negated: bool) {
let sql = &format!(
"SELECT * FROM customers WHERE segment {}IN ('HIGH', 'MED')",
if negated { "NOT " } else { "" }
);
let select = verified_only_select(sql);
assert_eq!(
ASTNode::SQLInList {
expr: Box::new(ASTNode::SQLIdentifier("segment".to_string())),
list: vec![
ASTNode::SQLValue(Value::SingleQuotedString("HIGH".to_string())),
ASTNode::SQLValue(Value::SingleQuotedString("MED".to_string())),
],
negated,
},
select.selection.unwrap()
);
}
chk(false);
chk(true);
}
#[test]
fn parse_in_subquery() {
let sql = "SELECT * FROM customers WHERE segment IN (SELECT segm FROM bar)";
let select = verified_only_select(sql);
assert_eq!(
ASTNode::SQLInSubquery {
expr: Box::new(ASTNode::SQLIdentifier("segment".to_string())),
subquery: Box::new(verified_query("SELECT segm FROM bar")),
negated: false,
},
select.selection.unwrap()
);
}
#[test]
fn parse_between() {
fn chk(negated: bool) {
let sql = &format!(
"SELECT * FROM customers WHERE age {}BETWEEN 25 AND 32",
if negated { "NOT " } else { "" }
);
let select = verified_only_select(sql);
assert_eq!(
ASTNode::SQLBetween {
expr: Box::new(ASTNode::SQLIdentifier("age".to_string())),
low: Box::new(ASTNode::SQLValue(Value::Long(25))),
high: Box::new(ASTNode::SQLValue(Value::Long(32))),
negated,
},
select.selection.unwrap()
);
}
chk(false);
chk(true);
}
#[test]
fn parse_between_with_expr() {
use self::ASTNode::*;
use self::SQLOperator::*;
let sql = "SELECT * FROM t WHERE 1 BETWEEN 1 + 2 AND 3 + 4 IS NULL";
let select = verified_only_select(sql);
assert_eq!(
ASTNode::SQLIsNull(Box::new(ASTNode::SQLBetween {
expr: Box::new(ASTNode::SQLValue(Value::Long(1))),
low: Box::new(SQLBinaryExpr {
left: Box::new(ASTNode::SQLValue(Value::Long(1))),
op: Plus,
right: Box::new(ASTNode::SQLValue(Value::Long(2))),
}),
high: Box::new(SQLBinaryExpr {
left: Box::new(ASTNode::SQLValue(Value::Long(3))),
op: Plus,
right: Box::new(ASTNode::SQLValue(Value::Long(4))),
}),
negated: false,
})),
select.selection.unwrap()
);
let sql = "SELECT * FROM t WHERE 1 = 1 AND 1 + x BETWEEN 1 AND 2";
let select = verified_only_select(sql);
assert_eq!(
ASTNode::SQLBinaryExpr {
left: Box::new(ASTNode::SQLBinaryExpr {
left: Box::new(ASTNode::SQLValue(Value::Long(1))),
op: SQLOperator::Eq,
right: Box::new(ASTNode::SQLValue(Value::Long(1))),
}),
op: SQLOperator::And,
right: Box::new(ASTNode::SQLBetween {
expr: Box::new(ASTNode::SQLBinaryExpr {
left: Box::new(ASTNode::SQLValue(Value::Long(1))),
op: SQLOperator::Plus,
right: Box::new(ASTNode::SQLIdentifier("x".to_string())),
}),
low: Box::new(ASTNode::SQLValue(Value::Long(1))),
high: Box::new(ASTNode::SQLValue(Value::Long(2))),
negated: false,
}),
},
select.selection.unwrap(),
)
}
#[test]
fn parse_select_order_by() {
fn chk(sql: &str) {
let select = verified_query(sql);
assert_eq!(
vec![
SQLOrderByExpr {
expr: ASTNode::SQLIdentifier("lname".to_string()),
asc: Some(true),
},
SQLOrderByExpr {
expr: ASTNode::SQLIdentifier("fname".to_string()),
asc: Some(false),
},
SQLOrderByExpr {
expr: ASTNode::SQLIdentifier("id".to_string()),
asc: None,
},
],
select.order_by
);
}
chk("SELECT id, fname, lname FROM customer WHERE id < 5 ORDER BY lname ASC, fname DESC, id");
// make sure ORDER is not treated as an alias
chk("SELECT id, fname, lname FROM customer ORDER BY lname ASC, fname DESC, id");
chk("SELECT 1 AS lname, 2 AS fname, 3 AS id, 4 ORDER BY lname ASC, fname DESC, id");
}
#[test]
fn parse_select_order_by_limit() {
let sql = "SELECT id, fname, lname FROM customer WHERE id < 5 \
ORDER BY lname ASC, fname DESC LIMIT 2";
let select = verified_query(sql);
assert_eq!(
vec![
SQLOrderByExpr {
expr: ASTNode::SQLIdentifier("lname".to_string()),
asc: Some(true),
},
SQLOrderByExpr {
expr: ASTNode::SQLIdentifier("fname".to_string()),
asc: Some(false),
},
],
select.order_by
);
assert_eq!(Some(ASTNode::SQLValue(Value::Long(2))), select.limit);
}
#[test]
fn parse_select_group_by() {
let sql = "SELECT id, fname, lname FROM customer GROUP BY lname, fname";
let select = verified_only_select(sql);
assert_eq!(
vec![
ASTNode::SQLIdentifier("lname".to_string()),
ASTNode::SQLIdentifier("fname".to_string()),
],
select.group_by
);
}
#[test]
fn parse_limit_accepts_all() {
one_statement_parses_to(
"SELECT id, fname, lname FROM customer WHERE id = 1 LIMIT ALL",
"SELECT id, fname, lname FROM customer WHERE id = 1",
);
}
#[test]
fn parse_cast() {
let sql = "SELECT CAST(id AS bigint) FROM customer";
let select = verified_only_select(sql);
assert_eq!(
&ASTNode::SQLCast {
expr: Box::new(ASTNode::SQLIdentifier("id".to_string())),
data_type: SQLType::BigInt
},
expr_from_projection(only(&select.projection))
);
one_statement_parses_to(
"SELECT CAST(id AS BIGINT) FROM customer",
"SELECT CAST(id AS bigint) FROM customer",
);
}
#[test]
fn parse_create_table() {
let sql = "CREATE TABLE uk_cities (\
name VARCHAR(100) NOT NULL,\
lat DOUBLE NULL,\
lng DOUBLE NULL)";
let ast = one_statement_parses_to(
sql,
"CREATE TABLE uk_cities (\
name character varying(100) NOT NULL, \
lat double, \
lng double)",
);
match ast {
SQLStatement::SQLCreateTable {
name,
columns,
constraints,
external: false,
file_format: None,
location: None,
} => {
assert_eq!("uk_cities", name.to_string());
assert_eq!(3, columns.len());
assert!(constraints.is_empty());
let c_name = &columns[0];
assert_eq!("name", c_name.name);
assert_eq!(SQLType::Varchar(Some(100)), c_name.data_type);
assert_eq!(false, c_name.allow_null);
let c_lat = &columns[1];
assert_eq!("lat", c_lat.name);
assert_eq!(SQLType::Double, c_lat.data_type);
assert_eq!(true, c_lat.allow_null);
let c_lng = &columns[2];
assert_eq!("lng", c_lng.name);
assert_eq!(SQLType::Double, c_lng.data_type);
assert_eq!(true, c_lng.allow_null);
}
_ => unreachable!(),
}
}
#[test]
fn parse_create_table_trailing_comma() {
let sql = "CREATE TABLE foo (bar int,)";
all_dialects().one_statement_parses_to(sql, "CREATE TABLE foo (bar int)");
}
#[test]
fn parse_create_external_table() {
let sql = "CREATE EXTERNAL TABLE uk_cities (\
name VARCHAR(100) NOT NULL,\
lat DOUBLE NULL,\
lng DOUBLE NULL)\
STORED AS TEXTFILE LOCATION '/tmp/example.csv";
let ast = one_statement_parses_to(
sql,
"CREATE EXTERNAL TABLE uk_cities (\
name character varying(100) NOT NULL, \
lat double, \
lng double) \
STORED AS TEXTFILE LOCATION '/tmp/example.csv'",
);
match ast {
SQLStatement::SQLCreateTable {
name,
columns,
constraints,
external,
file_format,
location,
} => {
assert_eq!("uk_cities", name.to_string());
assert_eq!(3, columns.len());
assert!(constraints.is_empty());
let c_name = &columns[0];
assert_eq!("name", c_name.name);
assert_eq!(SQLType::Varchar(Some(100)), c_name.data_type);
assert_eq!(false, c_name.allow_null);
let c_lat = &columns[1];
assert_eq!("lat", c_lat.name);
assert_eq!(SQLType::Double, c_lat.data_type);
assert_eq!(true, c_lat.allow_null);
let c_lng = &columns[2];
assert_eq!("lng", c_lng.name);
assert_eq!(SQLType::Double, c_lng.data_type);
assert_eq!(true, c_lng.allow_null);
assert!(external);
assert_eq!(FileFormat::TEXTFILE, file_format.unwrap());
assert_eq!("/tmp/example.csv", location.unwrap());
}
_ => unreachable!(),
}
}
#[test]
fn parse_alter_table_constraints() {
check_one("CONSTRAINT address_pkey PRIMARY KEY (address_id)");
check_one("CONSTRAINT uk_task UNIQUE (report_date, task_id)");
check_one(
"CONSTRAINT customer_address_id_fkey FOREIGN KEY (address_id) \
REFERENCES public.address(address_id)",
);
check_one("CONSTRAINT ck CHECK (rtrim(ltrim(REF_CODE)) <> '')");
check_one("PRIMARY KEY (foo, bar)");
check_one("UNIQUE (id)");
check_one("FOREIGN KEY (foo, bar) REFERENCES AnotherTable(foo, bar)");
check_one("CHECK (end_date > start_date OR end_date IS NULL)");
fn check_one(constraint_text: &str) {
match verified_stmt(&format!("ALTER TABLE tab ADD {}", constraint_text)) {
SQLStatement::SQLAlterTable {
name,
operation: AlterTableOperation::AddConstraint(constraint),
} => {
assert_eq!("tab", name.to_string());
assert_eq!(constraint_text, constraint.to_string());
}
_ => unreachable!(),
}
verified_stmt(&format!("CREATE TABLE foo (id int, {})", constraint_text));
}
}
#[test]
fn parse_bad_constraint() {
let res = parse_sql_statements("ALTER TABLE tab ADD");
assert_eq!(
ParserError::ParserError(
"Expected a constraint in ALTER TABLE .. ADD, found: EOF".to_string()
),
res.unwrap_err()
);
let res = parse_sql_statements("CREATE TABLE tab (foo int,");
assert_eq!(
ParserError::ParserError(
"Expected column name or constraint definition, found: EOF".to_string()
),
res.unwrap_err()
);
}
#[test]
fn parse_scalar_function_in_projection() {
let sql = "SELECT sqrt(id) FROM foo";
let select = verified_only_select(sql);
assert_eq!(
&ASTNode::SQLFunction {
name: SQLObjectName(vec!["sqrt".to_string()]),
args: vec![ASTNode::SQLIdentifier("id".to_string())],
over: None,
distinct: false,
},
expr_from_projection(only(&select.projection))
);
}
#[test]
fn parse_window_functions() {
let sql = "SELECT row_number() OVER (ORDER BY dt DESC), \
sum(foo) OVER (PARTITION BY a, b ORDER BY c, d \
ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW), \
avg(bar) OVER (ORDER BY a \
RANGE BETWEEN 1 PRECEDING AND 1 FOLLOWING), \
max(baz) OVER (ORDER BY a \
ROWS UNBOUNDED PRECEDING) \
FROM foo";
let select = verified_only_select(sql);
assert_eq!(4, select.projection.len());
assert_eq!(
&ASTNode::SQLFunction {
name: SQLObjectName(vec!["row_number".to_string()]),
args: vec![],
over: Some(SQLWindowSpec {
partition_by: vec![],
order_by: vec![SQLOrderByExpr {
expr: ASTNode::SQLIdentifier("dt".to_string()),
asc: Some(false)
}],
window_frame: None,
}),
distinct: false,
},
expr_from_projection(&select.projection[0])
);
}
#[test]
fn parse_aggregate_with_group_by() {
let sql = "SELECT a, COUNT(1), MIN(b), MAX(b) FROM foo GROUP BY a";
let _ast = verified_only_select(sql);
//TODO: assertions
}
#[test]
fn parse_literal_string() {
let sql = "SELECT 'one', N'national string'";
let select = verified_only_select(sql);
assert_eq!(2, select.projection.len());
assert_eq!(
&ASTNode::SQLValue(Value::SingleQuotedString("one".to_string())),
expr_from_projection(&select.projection[0])
);
assert_eq!(
&ASTNode::SQLValue(Value::NationalStringLiteral("national string".to_string())),
expr_from_projection(&select.projection[1])
);
}
#[test]
fn parse_simple_math_expr_plus() {
let sql = "SELECT a + b, 2 + a, 2.5 + a, a_f + b_f, 2 + a_f, 2.5 + a_f FROM c";
verified_only_select(sql);
}
#[test]
fn parse_simple_math_expr_minus() {
let sql = "SELECT a - b, 2 - a, 2.5 - a, a_f - b_f, 2 - a_f, 2.5 - a_f FROM c";
verified_only_select(sql);
}
#[test]
fn parse_delimited_identifiers() {
// check that quoted identifiers in any position remain quoted after serialization
let select = verified_only_select(
r#"SELECT "alias"."bar baz", "myfun"(), "simple id" AS "column alias" FROM "a table" AS "alias""#
);
// check FROM
match select.relation.unwrap() {
TableFactor::Table {
name,
alias,
args,
with_hints,
} => {
assert_eq!(vec![r#""a table""#.to_string()], name.0);
assert_eq!(r#""alias""#, alias.unwrap());
assert!(args.is_empty());
assert!(with_hints.is_empty());
}
_ => panic!("Expecting TableFactor::Table"),
}
// check SELECT
assert_eq!(3, select.projection.len());
assert_eq!(
&ASTNode::SQLCompoundIdentifier(vec![r#""alias""#.to_string(), r#""bar baz""#.to_string()]),
expr_from_projection(&select.projection[0]),
);
assert_eq!(
&ASTNode::SQLFunction {
name: SQLObjectName(vec![r#""myfun""#.to_string()]),
args: vec![],
over: None,
distinct: false,
},
expr_from_projection(&select.projection[1]),
);
match &select.projection[2] {
SQLSelectItem::ExpressionWithAlias { expr, alias } => {
assert_eq!(&ASTNode::SQLIdentifier(r#""simple id""#.to_string()), expr);
assert_eq!(r#""column alias""#, alias);
}
_ => panic!("Expected ExpressionWithAlias"),
}
verified_stmt(r#"CREATE TABLE "foo" ("bar" "int")"#);
verified_stmt(r#"ALTER TABLE foo ADD CONSTRAINT "bar" PRIMARY KEY (baz)"#);
//TODO verified_stmt(r#"UPDATE foo SET "bar" = 5"#);
}
#[test]
fn parse_parens() {
use self::ASTNode::*;
use self::SQLOperator::*;
let sql = "(a + b) - (c + d)";
assert_eq!(
SQLBinaryExpr {
left: Box::new(SQLNested(Box::new(SQLBinaryExpr {
left: Box::new(SQLIdentifier("a".to_string())),
op: Plus,
right: Box::new(SQLIdentifier("b".to_string()))
}))),
op: Minus,
right: Box::new(SQLNested(Box::new(SQLBinaryExpr {
left: Box::new(SQLIdentifier("c".to_string())),
op: Plus,
right: Box::new(SQLIdentifier("d".to_string()))
})))
},
verified_expr(sql)
);
}
#[test]
fn parse_searched_case_expression() {
let sql = "SELECT CASE WHEN bar IS NULL THEN 'null' WHEN bar = 0 THEN '=0' WHEN bar >= 0 THEN '>=0' ELSE '<0' END FROM foo";
use self::ASTNode::{SQLBinaryExpr, SQLCase, SQLIdentifier, SQLIsNull, SQLValue};
use self::SQLOperator::*;
let select = verified_only_select(sql);
assert_eq!(
&SQLCase {
operand: None,
conditions: vec![
SQLIsNull(Box::new(SQLIdentifier("bar".to_string()))),
SQLBinaryExpr {
left: Box::new(SQLIdentifier("bar".to_string())),
op: Eq,
right: Box::new(SQLValue(Value::Long(0)))
},
SQLBinaryExpr {
left: Box::new(SQLIdentifier("bar".to_string())),
op: GtEq,
right: Box::new(SQLValue(Value::Long(0)))
}
],
results: vec![
SQLValue(Value::SingleQuotedString("null".to_string())),
SQLValue(Value::SingleQuotedString("=0".to_string())),
SQLValue(Value::SingleQuotedString(">=0".to_string()))
],
else_result: Some(Box::new(SQLValue(Value::SingleQuotedString(
"<0".to_string()
))))
},
expr_from_projection(only(&select.projection)),
);
}
#[test]
fn parse_simple_case_expression() {
// ANSI calls a CASE expression with an operand "<simple case>"
let sql = "SELECT CASE foo WHEN 1 THEN 'Y' ELSE 'N' END";
let select = verified_only_select(sql);
use self::ASTNode::{SQLCase, SQLIdentifier, SQLValue};
assert_eq!(
&SQLCase {
operand: Some(Box::new(SQLIdentifier("foo".to_string()))),
conditions: vec![SQLValue(Value::Long(1))],
results: vec![SQLValue(Value::SingleQuotedString("Y".to_string())),],
else_result: Some(Box::new(SQLValue(Value::SingleQuotedString(
"N".to_string()
))))
},
expr_from_projection(only(&select.projection)),
);
}
#[test]
fn parse_from_advanced() {
let sql = "SELECT * FROM fn(1, 2) AS foo, schema.bar AS bar WITH (NOLOCK)";
let _select = verified_only_select(sql);
}
#[test]
fn parse_implicit_join() {
let sql = "SELECT * FROM t1, t2";
let select = verified_only_select(sql);
assert_eq!(
&Join {
relation: TableFactor::Table {
name: SQLObjectName(vec!["t2".to_string()]),
alias: None,
args: vec![],
with_hints: vec![],
},
join_operator: JoinOperator::Implicit
},
only(&select.joins),
);
}
#[test]
fn parse_cross_join() {
let sql = "SELECT * FROM t1 CROSS JOIN t2";
let select = verified_only_select(sql);
assert_eq!(
&Join {
relation: TableFactor::Table {
name: SQLObjectName(vec!["t2".to_string()]),
alias: None,
args: vec![],
with_hints: vec![],
},
join_operator: JoinOperator::Cross
},
only(&select.joins),
);
}
#[test]
fn parse_joins_on() {
fn join_with_constraint(
relation: impl Into<String>,
alias: Option<SQLIdent>,
f: impl Fn(JoinConstraint) -> JoinOperator,
) -> Join {
Join {
relation: TableFactor::Table {
name: SQLObjectName(vec![relation.into()]),
alias,
args: vec![],
with_hints: vec![],
},
join_operator: f(JoinConstraint::On(ASTNode::SQLBinaryExpr {
left: Box::new(ASTNode::SQLIdentifier("c1".into())),
op: SQLOperator::Eq,
right: Box::new(ASTNode::SQLIdentifier("c2".into())),
})),
}
}
// Test parsing of aliases
assert_eq!(
verified_only_select("SELECT * FROM t1 JOIN t2 AS foo ON c1 = c2").joins,
vec![join_with_constraint(
"t2",
Some("foo".to_string()),
JoinOperator::Inner
)]
);
one_statement_parses_to(
"SELECT * FROM t1 JOIN t2 foo ON c1 = c2",
"SELECT * FROM t1 JOIN t2 AS foo ON c1 = c2",
);
// Test parsing of different join operators
assert_eq!(
verified_only_select("SELECT * FROM t1 JOIN t2 ON c1 = c2").joins,
vec![join_with_constraint("t2", None, JoinOperator::Inner)]
);
assert_eq!(
verified_only_select("SELECT * FROM t1 LEFT JOIN t2 ON c1 = c2").joins,
vec![join_with_constraint("t2", None, JoinOperator::LeftOuter)]
);
assert_eq!(
verified_only_select("SELECT * FROM t1 RIGHT JOIN t2 ON c1 = c2").joins,
vec![join_with_constraint("t2", None, JoinOperator::RightOuter)]
);
assert_eq!(
verified_only_select("SELECT * FROM t1 FULL JOIN t2 ON c1 = c2").joins,
vec![join_with_constraint("t2", None, JoinOperator::FullOuter)]
);
}
#[test]
fn parse_joins_using() {
fn join_with_constraint(
relation: impl Into<String>,
alias: Option<SQLIdent>,
f: impl Fn(JoinConstraint) -> JoinOperator,
) -> Join {
Join {
relation: TableFactor::Table {
name: SQLObjectName(vec![relation.into()]),
alias,
args: vec![],
with_hints: vec![],
},
join_operator: f(JoinConstraint::Using(vec!["c1".into()])),
}
}
// Test parsing of aliases
assert_eq!(
verified_only_select("SELECT * FROM t1 JOIN t2 AS foo USING(c1)").joins,
vec![join_with_constraint(
"t2",
Some("foo".to_string()),
JoinOperator::Inner
)]
);
one_statement_parses_to(
"SELECT * FROM t1 JOIN t2 foo USING(c1)",
"SELECT * FROM t1 JOIN t2 AS foo USING(c1)",
);
// Test parsing of different join operators
assert_eq!(
verified_only_select("SELECT * FROM t1 JOIN t2 USING(c1)").joins,
vec![join_with_constraint("t2", None, JoinOperator::Inner)]
);
assert_eq!(
verified_only_select("SELECT * FROM t1 LEFT JOIN t2 USING(c1)").joins,
vec![join_with_constraint("t2", None, JoinOperator::LeftOuter)]
);
assert_eq!(
verified_only_select("SELECT * FROM t1 RIGHT JOIN t2 USING(c1)").joins,
vec![join_with_constraint("t2", None, JoinOperator::RightOuter)]
);
assert_eq!(
verified_only_select("SELECT * FROM t1 FULL JOIN t2 USING(c1)").joins,
vec![join_with_constraint("t2", None, JoinOperator::FullOuter)]
);
}
#[test]
fn parse_complex_join() {
let sql = "SELECT c1, c2 FROM t1, t4 JOIN t2 ON t2.c = t1.c LEFT JOIN t3 USING(q, c) WHERE t4.c = t1.c";
verified_only_select(sql);
}
#[test]
fn parse_join_syntax_variants() {
one_statement_parses_to(
"SELECT c1 FROM t1 INNER JOIN t2 USING(c1)",
"SELECT c1 FROM t1 JOIN t2 USING(c1)",
);
one_statement_parses_to(
"SELECT c1 FROM t1 LEFT OUTER JOIN t2 USING(c1)",
"SELECT c1 FROM t1 LEFT JOIN t2 USING(c1)",
);
one_statement_parses_to(
"SELECT c1 FROM t1 RIGHT OUTER JOIN t2 USING(c1)",
"SELECT c1 FROM t1 RIGHT JOIN t2 USING(c1)",
);
one_statement_parses_to(
"SELECT c1 FROM t1 FULL OUTER JOIN t2 USING(c1)",
"SELECT c1 FROM t1 FULL JOIN t2 USING(c1)",
);
}
#[test]
fn parse_ctes() {
let cte_sqls = vec!["SELECT 1 AS foo", "SELECT 2 AS bar"];
let with = &format!(
"WITH a AS ({}), b AS ({}) SELECT foo + bar FROM a, b",
cte_sqls[0], cte_sqls[1]
);
fn assert_ctes_in_select(expected: &[&str], sel: &SQLQuery) {
let mut i = 0;
for exp in expected {
let Cte {
query,
alias,
renamed_columns,
} = &sel.ctes[i];
assert_eq!(*exp, query.to_string());
assert_eq!(if i == 0 { "a" } else { "b" }, alias);
assert!(renamed_columns.is_empty());
i += 1;
}
}
// Top-level CTE
assert_ctes_in_select(&cte_sqls, &verified_query(with));
// CTE in a subquery
let sql = &format!("SELECT ({})", with);
let select = verified_only_select(sql);
match expr_from_projection(only(&select.projection)) {
ASTNode::SQLSubquery(ref subquery) => {
assert_ctes_in_select(&cte_sqls, subquery.as_ref());
}
_ => panic!("Expected subquery"),
}
// CTE in a derived table
let sql = &format!("SELECT * FROM ({})", with);
let select = verified_only_select(sql);
match select.relation {
Some(TableFactor::Derived { subquery, .. }) => {
assert_ctes_in_select(&cte_sqls, subquery.as_ref())
}
_ => panic!("Expected derived table"),
}
// CTE in a view
let sql = &format!("CREATE VIEW v AS {}", with);
match verified_stmt(sql) {
SQLStatement::SQLCreateView { query, .. } => assert_ctes_in_select(&cte_sqls, &query),
_ => panic!("Expected CREATE VIEW"),
}
// CTE in a CTE...
let sql = &format!("WITH outer_cte AS ({}) SELECT * FROM outer_cte", with);
let select = verified_query(sql);
assert_ctes_in_select(&cte_sqls, &only(&select.ctes).query);
}
#[test]
fn parse_cte_renamed_columns() {
let sql = "WITH cte (col1, col2) AS (SELECT foo, bar FROM baz) SELECT * FROM cte";
let query = all_dialects().verified_query(sql);
assert_eq!(
vec!["col1", "col2"],
query.ctes.first().unwrap().renamed_columns
);
}
#[test]
fn parse_derived_tables() {
let sql = "SELECT a.x, b.y FROM (SELECT x FROM foo) AS a CROSS JOIN (SELECT y FROM bar) AS b";
let _ = verified_only_select(sql);
//TODO: add assertions
}
#[test]
fn parse_union() {
// TODO: add assertions
verified_stmt("SELECT 1 UNION SELECT 2");
verified_stmt("SELECT 1 UNION ALL SELECT 2");
verified_stmt("SELECT 1 EXCEPT SELECT 2");
verified_stmt("SELECT 1 EXCEPT ALL SELECT 2");
verified_stmt("SELECT 1 INTERSECT SELECT 2");
verified_stmt("SELECT 1 INTERSECT ALL SELECT 2");
verified_stmt("SELECT 1 UNION SELECT 2 UNION SELECT 3");
verified_stmt("SELECT 1 EXCEPT SELECT 2 UNION SELECT 3"); // Union[Except[1,2], 3]
verified_stmt("SELECT 1 INTERSECT (SELECT 2 EXCEPT SELECT 3)");
verified_stmt("WITH cte AS (SELECT 1 AS foo) (SELECT foo FROM cte ORDER BY 1 LIMIT 1)");
verified_stmt("SELECT 1 UNION (SELECT 2 ORDER BY 1 LIMIT 1)");
verified_stmt("SELECT 1 UNION SELECT 2 INTERSECT SELECT 3"); // Union[1, Intersect[2,3]]
verified_stmt("SELECT foo FROM tab UNION SELECT bar FROM TAB");
}
#[test]
fn parse_multiple_statements() {
fn test_with(sql1: &str, sql2_kw: &str, sql2_rest: &str) {
// Check that a string consisting of two statements delimited by a semicolon
// parses the same as both statements individually:
let res = parse_sql_statements(&(sql1.to_owned() + ";" + sql2_kw + sql2_rest));
assert_eq!(
vec![
one_statement_parses_to(&sql1, ""),
one_statement_parses_to(&(sql2_kw.to_owned() + sql2_rest), ""),
],
res.unwrap()
);
// Check that extra semicolon at the end is stripped by normalization:
one_statement_parses_to(&(sql1.to_owned() + ";"), sql1);
// Check that forgetting the semicolon results in an error:
let res = parse_sql_statements(&(sql1.to_owned() + " " + sql2_kw + sql2_rest));
assert_eq!(
ParserError::ParserError("Expected end of statement, found: ".to_string() + sql2_kw),
res.unwrap_err()
);
}
test_with("SELECT foo", "SELECT", " bar");
// ensure that SELECT/WITH is not parsed as a table or column alias if ';'
// separating the statements is omitted:
test_with("SELECT foo FROM baz", "SELECT", " bar");
test_with("SELECT foo", "WITH", " cte AS (SELECT 1 AS s) SELECT bar");
test_with(
"SELECT foo FROM baz",
"WITH",
" cte AS (SELECT 1 AS s) SELECT bar",
);
test_with("DELETE FROM foo", "SELECT", " bar");
test_with("INSERT INTO foo VALUES(1)", "SELECT", " bar");
test_with("CREATE TABLE foo (baz int)", "SELECT", " bar");
// Make sure that empty statements do not cause an error:
let res = parse_sql_statements(";;");
assert_eq!(0, res.unwrap().len());
}
#[test]
fn parse_scalar_subqueries() {
use self::ASTNode::*;
let sql = "(SELECT 1) + (SELECT 2)";
assert_matches!(verified_expr(sql), SQLBinaryExpr {
op: SQLOperator::Plus, ..
//left: box SQLSubquery { .. },
//right: box SQLSubquery { .. },
});
}
#[test]
fn parse_create_view() {
let sql = "CREATE VIEW myschema.myview AS SELECT foo FROM bar";
match verified_stmt(sql) {
SQLStatement::SQLCreateView {
name,
query,
materialized,
} => {
assert_eq!("myschema.myview", name.to_string());
assert_eq!("SELECT foo FROM bar", query.to_string());
assert!(!materialized);
}
_ => unreachable!(),
}
}
#[test]
fn parse_create_materialized_view() {
let sql = "CREATE MATERIALIZED VIEW myschema.myview AS SELECT foo FROM bar";
match verified_stmt(sql) {
SQLStatement::SQLCreateView {
name,
query,
materialized,
} => {
assert_eq!("myschema.myview", name.to_string());
assert_eq!("SELECT foo FROM bar", query.to_string());
assert!(materialized);
}
_ => unreachable!(),
}
}
#[test]
fn parse_drop_table() {
let sql = "DROP TABLE foo";
match verified_stmt(sql) {
SQLStatement::SQLDrop {
object_type,
if_exists,
names,
cascade,
} => {
assert_eq!(false, if_exists);
assert_eq!(SQLObjectType::Table, object_type);
assert_eq!(
vec!["foo"],
names.iter().map(|n| n.to_string()).collect::<Vec<_>>()
);
assert_eq!(false, cascade);
}
_ => unreachable!(),
}
let sql = "DROP TABLE IF EXISTS foo, bar CASCADE";
match verified_stmt(sql) {
SQLStatement::SQLDrop {
object_type,
if_exists,
names,
cascade,
} => {
assert_eq!(true, if_exists);
assert_eq!(SQLObjectType::Table, object_type);
assert_eq!(
vec!["foo", "bar"],
names.iter().map(|n| n.to_string()).collect::<Vec<_>>()
);
assert_eq!(true, cascade);
}
_ => unreachable!(),
}
let sql = "DROP TABLE";
assert_eq!(
ParserError::ParserError("Expected identifier, found: EOF".to_string()),
parse_sql_statements(sql).unwrap_err(),
);
let sql = "DROP TABLE IF EXISTS foo, bar CASCADE RESTRICT";
assert_eq!(
ParserError::ParserError("Cannot specify both CASCADE and RESTRICT in DROP".to_string()),
parse_sql_statements(sql).unwrap_err(),
);
}
#[test]
fn parse_drop_view() {
let sql = "DROP VIEW myschema.myview";
match verified_stmt(sql) {
SQLStatement::SQLDrop {
names, object_type, ..
} => {
assert_eq!(
vec!["myschema.myview"],
names.iter().map(|n| n.to_string()).collect::<Vec<_>>()
);
assert_eq!(SQLObjectType::View, object_type);
}
_ => unreachable!(),
}
}
#[test]
fn parse_invalid_subquery_without_parens() {
let res = parse_sql_statements("SELECT SELECT 1 FROM bar WHERE 1=1 FROM baz");
assert_eq!(
ParserError::ParserError("Expected end of statement, found: 1".to_string()),
res.unwrap_err()
);
}
#[test]
fn parse_offset() {
let ast = verified_query("SELECT foo FROM bar OFFSET 2 ROWS");
assert_eq!(ast.offset, Some(ASTNode::SQLValue(Value::Long(2))));
let ast = verified_query("SELECT foo FROM bar WHERE foo = 4 OFFSET 2 ROWS");
assert_eq!(ast.offset, Some(ASTNode::SQLValue(Value::Long(2))));
let ast = verified_query("SELECT foo FROM bar ORDER BY baz OFFSET 2 ROWS");
assert_eq!(ast.offset, Some(ASTNode::SQLValue(Value::Long(2))));
let ast = verified_query("SELECT foo FROM bar WHERE foo = 4 ORDER BY baz OFFSET 2 ROWS");
assert_eq!(ast.offset, Some(ASTNode::SQLValue(Value::Long(2))));
let ast = verified_query("SELECT foo FROM (SELECT * FROM bar OFFSET 2 ROWS) OFFSET 2 ROWS");
assert_eq!(ast.offset, Some(ASTNode::SQLValue(Value::Long(2))));
match ast.body {
SQLSetExpr::Select(s) => match s.relation {
Some(TableFactor::Derived { subquery, .. }) => {
assert_eq!(subquery.offset, Some(ASTNode::SQLValue(Value::Long(2))));
}
_ => panic!("Test broke"),
},
_ => panic!("Test broke"),
}
}
#[test]
fn parse_singular_row_offset() {
one_statement_parses_to(
"SELECT foo FROM bar OFFSET 1 ROW",
"SELECT foo FROM bar OFFSET 1 ROWS",
);
}
#[test]
fn parse_fetch() {
let ast = verified_query("SELECT foo FROM bar FETCH FIRST 2 ROWS ONLY");
assert_eq!(
ast.fetch,
Some(Fetch {
with_ties: false,
percent: false,
quantity: Some(ASTNode::SQLValue(Value::Long(2))),
})
);
let ast = verified_query("SELECT foo FROM bar FETCH FIRST ROWS ONLY");
assert_eq!(
ast.fetch,
Some(Fetch {
with_ties: false,
percent: false,
quantity: None,
})
);
let ast = verified_query("SELECT foo FROM bar WHERE foo = 4 FETCH FIRST 2 ROWS ONLY");
assert_eq!(
ast.fetch,
Some(Fetch {
with_ties: false,
percent: false,
quantity: Some(ASTNode::SQLValue(Value::Long(2))),
})
);
let ast = verified_query("SELECT foo FROM bar ORDER BY baz FETCH FIRST 2 ROWS ONLY");
assert_eq!(
ast.fetch,
Some(Fetch {
with_ties: false,
percent: false,
quantity: Some(ASTNode::SQLValue(Value::Long(2))),
})
);
let ast = verified_query(
"SELECT foo FROM bar WHERE foo = 4 ORDER BY baz FETCH FIRST 2 ROWS WITH TIES",
);
assert_eq!(
ast.fetch,
Some(Fetch {
with_ties: true,
percent: false,
quantity: Some(ASTNode::SQLValue(Value::Long(2))),
})
);
let ast = verified_query("SELECT foo FROM bar FETCH FIRST 50 PERCENT ROWS ONLY");
assert_eq!(
ast.fetch,
Some(Fetch {
with_ties: false,
percent: true,
quantity: Some(ASTNode::SQLValue(Value::Long(50))),
})
);
let ast = verified_query(
"SELECT foo FROM bar WHERE foo = 4 ORDER BY baz OFFSET 2 ROWS FETCH FIRST 2 ROWS ONLY",
);
assert_eq!(ast.offset, Some(ASTNode::SQLValue(Value::Long(2))));
assert_eq!(
ast.fetch,
Some(Fetch {
with_ties: false,
percent: false,
quantity: Some(ASTNode::SQLValue(Value::Long(2))),
})
);
let ast = verified_query(
"SELECT foo FROM (SELECT * FROM bar FETCH FIRST 2 ROWS ONLY) FETCH FIRST 2 ROWS ONLY",
);
assert_eq!(
ast.fetch,
Some(Fetch {
with_ties: false,
percent: false,
quantity: Some(ASTNode::SQLValue(Value::Long(2))),
})
);
match ast.body {
SQLSetExpr::Select(s) => match s.relation {
Some(TableFactor::Derived { subquery, .. }) => {
assert_eq!(
subquery.fetch,
Some(Fetch {
with_ties: false,
percent: false,
quantity: Some(ASTNode::SQLValue(Value::Long(2))),
})
);
}
_ => panic!("Test broke"),
},
_ => panic!("Test broke"),
}
let ast = verified_query("SELECT foo FROM (SELECT * FROM bar OFFSET 2 ROWS FETCH FIRST 2 ROWS ONLY) OFFSET 2 ROWS FETCH FIRST 2 ROWS ONLY");
assert_eq!(ast.offset, Some(ASTNode::SQLValue(Value::Long(2))));
assert_eq!(
ast.fetch,
Some(Fetch {
with_ties: false,
percent: false,
quantity: Some(ASTNode::SQLValue(Value::Long(2))),
})
);
match ast.body {
SQLSetExpr::Select(s) => match s.relation {
Some(TableFactor::Derived { subquery, .. }) => {
assert_eq!(subquery.offset, Some(ASTNode::SQLValue(Value::Long(2))));
assert_eq!(
subquery.fetch,
Some(Fetch {
with_ties: false,
percent: false,
quantity: Some(ASTNode::SQLValue(Value::Long(2))),
})
);
}
_ => panic!("Test broke"),
},
_ => panic!("Test broke"),
}
}
#[test]
fn parse_fetch_variations() {
one_statement_parses_to(
"SELECT foo FROM bar FETCH FIRST 10 ROW ONLY",
"SELECT foo FROM bar FETCH FIRST 10 ROWS ONLY",
);
one_statement_parses_to(
"SELECT foo FROM bar FETCH NEXT 10 ROW ONLY",
"SELECT foo FROM bar FETCH FIRST 10 ROWS ONLY",
);
one_statement_parses_to(
"SELECT foo FROM bar FETCH NEXT 10 ROWS WITH TIES",
"SELECT foo FROM bar FETCH FIRST 10 ROWS WITH TIES",
);
one_statement_parses_to(
"SELECT foo FROM bar FETCH NEXT ROWS WITH TIES",
"SELECT foo FROM bar FETCH FIRST ROWS WITH TIES",
);
one_statement_parses_to(
"SELECT foo FROM bar FETCH FIRST ROWS ONLY",
"SELECT foo FROM bar FETCH FIRST ROWS ONLY",
);
}
#[test]
fn lateral_derived() {
fn chk(lateral_in: bool) {
let lateral_str = if lateral_in { "LATERAL " } else { "" };
let sql = format!(
"SELECT * FROM customer LEFT JOIN {}\
(SELECT * FROM order WHERE order.customer = customer.id LIMIT 3) AS order ON true",
lateral_str
);
let select = verified_only_select(&sql);
assert_eq!(select.joins.len(), 1);
assert_eq!(
select.joins[0].join_operator,
JoinOperator::LeftOuter(JoinConstraint::On(ASTNode::SQLValue(Value::Boolean(true))))
);
if let TableFactor::Derived {
lateral,
ref subquery,
ref alias,
} = select.joins[0].relation
{
assert_eq!(lateral_in, lateral);
assert_eq!(Some("order".to_string()), *alias);
assert_eq!(
subquery.to_string(),
"SELECT * FROM order WHERE order.customer = customer.id LIMIT 3"
);
} else {
unreachable!()
}
}
chk(false);
chk(true);
let sql = "SELECT * FROM customer LEFT JOIN LATERAL generate_series(1, customer.id)";
let res = parse_sql_statements(sql);
assert_eq!(
ParserError::ParserError(
"Expected subquery after LATERAL, found: generate_series".to_string()
),
res.unwrap_err()
);
}
#[test]
#[should_panic(
expected = "Parse results with GenericSqlDialect are different from PostgreSqlDialect"
)]
fn ensure_multiple_dialects_are_tested() {
// The SQL here must be parsed differently by different dialects.
// At the time of writing, `@foo` is accepted as a valid identifier
// by the Generic and the MSSQL dialect, but not by Postgres and ANSI.
let _ = parse_sql_statements("SELECT @foo");
}
fn parse_sql_statements(sql: &str) -> Result<Vec<SQLStatement>, ParserError> {
all_dialects().parse_sql_statements(sql)
}
fn one_statement_parses_to(sql: &str, canonical: &str) -> SQLStatement {
all_dialects().one_statement_parses_to(sql, canonical)
}
fn verified_stmt(query: &str) -> SQLStatement {
all_dialects().verified_stmt(query)
}
fn verified_query(query: &str) -> SQLQuery {
all_dialects().verified_query(query)
}
fn verified_only_select(query: &str) -> SQLSelect {
all_dialects().verified_only_select(query)
}
fn verified_expr(query: &str) -> ASTNode {
all_dialects().verified_expr(query)
}
Reference in a new issue View git blame Copy permalink