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// Licensed 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.
#![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::ast::*;
use sqlparser::parser::*;
use sqlparser::test_utils::{all_dialects, expr_from_projection, number, only};
#[test]
fn parse_insert_values() {
let row = vec![
Expr::Value(number("1")),
Expr::Value(number("2")),
Expr::Value(number("3")),
];
let rows1 = vec![row.clone()];
let rows2 = vec![row.clone(), row];
let sql = "INSERT INTO customer VALUES (1, 2, 3)";
check_one(sql, "customer", &[], &rows1);
let sql = "INSERT INTO customer VALUES (1, 2, 3), (1, 2, 3)";
check_one(sql, "customer", &[], &rows2);
let sql = "INSERT INTO public.customer VALUES (1, 2, 3)";
check_one(sql, "public.customer", &[], &rows1);
let sql = "INSERT INTO db.public.customer VALUES (1, 2, 3)";
check_one(sql, "db.public.customer", &[], &rows1);
let sql = "INSERT INTO public.customer (id, name, active) VALUES (1, 2, 3)";
check_one(
sql,
"public.customer",
&["id".to_string(), "name".to_string(), "active".to_string()],
&rows1,
);
fn check_one(
sql: &str,
expected_table_name: &str,
expected_columns: &[String],
expected_rows: &[Vec<Expr>],
) {
match verified_stmt(sql) {
Statement::Insert {
table_name,
columns,
source,
..
} => {
assert_eq!(table_name.to_string(), expected_table_name);
assert_eq!(columns.len(), expected_columns.len());
for (index, column) in columns.iter().enumerate() {
assert_eq!(column, &Ident::new(expected_columns[index].clone()));
}
match &source.body {
SetExpr::Values(Values(values)) => assert_eq!(values.as_slice(), expected_rows),
_ => unreachable!(),
}
}
_ => unreachable!(),
}
}
verified_stmt("INSERT INTO customer WITH foo AS (SELECT 1) SELECT * FROM foo UNION VALUES (1)");
}
#[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) {
Statement::Update {
table_name,
assignments,
selection,
..
} => {
assert_eq!(table_name.to_string(), "t".to_string());
assert_eq!(
assignments,
vec![
Assignment {
id: "a".into(),
value: Expr::Value(number("1")),
},
Assignment {
id: "b".into(),
value: Expr::Value(number("2")),
},
Assignment {
id: "c".into(),
value: Expr::Value(number("3")),
},
]
);
assert_eq!(selection.unwrap(), Expr::Identifier("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) {
Statement::Delete { table_name, .. } => {
assert_eq!(
ObjectName(vec![Ident::with_quote('"', "table")]),
table_name
);
}
_ => unreachable!(),
}
}
#[test]
fn parse_where_delete_statement() {
use self::BinaryOperator::*;
let sql = "DELETE FROM foo WHERE name = 5";
match verified_stmt(sql) {
Statement::Delete {
table_name,
selection,
..
} => {
assert_eq!(ObjectName(vec![Ident::new("foo")]), table_name);
assert_eq!(
Expr::BinaryOp {
left: Box::new(Expr::Identifier(Ident::new("name"))),
op: Eq,
right: Box::new(Expr::Value(number("5"))),
},
selection.unwrap(),
);
}
_ => unreachable!(),
}
}
#[test]
fn parse_top_level() {
verified_stmt("SELECT 1");
verified_stmt("(SELECT 1)");
verified_stmt("((SELECT 1))");
verified_stmt("VALUES (1)");
}
#[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(Expr::Value(number("5"))), select.limit);
}
#[test]
fn parse_limit_is_not_an_alias() {
// In dialects supporting LIMIT it shouldn't be parsed as a table alias
let ast = verified_query("SELECT id FROM customer LIMIT 1");
assert_eq!(Some(Expr::Value(number("1"))), ast.limit);
let ast = verified_query("SELECT 1 LIMIT 5");
assert_eq!(Some(Expr::Value(number("5"))), ast.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!(
&SelectItem::UnnamedExpr(Expr::Identifier(Ident::new("name"))),
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!(&SelectItem::Wildcard, only(&select.projection));
let sql = "SELECT foo.* FROM foo";
let select = verified_only_select(sql);
assert_eq!(
&SelectItem::QualifiedWildcard(ObjectName(vec![Ident::new("foo")])),
only(&select.projection)
);
let sql = "SELECT myschema.mytable.* FROM myschema.mytable";
let select = verified_only_select(sql);
assert_eq!(
&SelectItem::QualifiedWildcard(ObjectName(vec![
Ident::new("myschema"),
Ident::new("mytable"),
])),
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 SelectItem::ExprWithAlias {
expr: Expr::BinaryOp {
ref op, ref right, ..
},
ref alias,
} = only(&select.projection)
{
assert_eq!(&BinaryOperator::Plus, op);
assert_eq!(&Expr::Value(number("1")), right.as_ref());
assert_eq!(&Ident::new("newname"), alias);
} else {
panic!("Expected ExprWithAlias")
}
// 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!(
&Expr::Function(Function {
name: ObjectName(vec![Ident::new("COUNT")]),
args: vec![Expr::Wildcard],
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!(
&Expr::Function(Function {
name: ObjectName(vec![Ident::new("COUNT")]),
args: vec![Expr::UnaryOp {
op: UnaryOperator::Plus,
expr: Box::new(Expr::Identifier(Ident::new("x")))
}],
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_parameters() {
let select = verified_only_select("SELECT $1");
assert_eq!(
&Expr::Parameter(1),
expr_from_projection(only(&select.projection)),
);
assert_eq!(
Expr::BinaryOp {
left: Box::new(Expr::Parameter(91)),
op: BinaryOperator::Plus,
right: Box::new(Expr::Parameter(42)),
},
verified_expr("$91 + $42"),
);
let res = parse_sql_statements("SELECT $q");
assert_eq!(
ParserError::TokenizerError(
"parameter marker ($) was not followed by at least one digit".into()
),
res.unwrap_err()
);
let res = parse_sql_statements("SELECT $1$2");
assert_eq!(
ParserError::ParserError("Expected end of statement, found: $2".into()),
res.unwrap_err()
);
let res = parse_sql_statements(&format!("SELECT $18446744073709551616"));
assert_eq!(
ParserError::ParserError(
"unable to parse parameter: number too large to fit in target type".into(),
),
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 end of statement, found: NOT".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),
SelectItem::UnnamedExpr(Expr::Collate { .. })
);
}
#[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_null_in_select() {
let sql = "SELECT NULL";
let select = verified_only_select(sql);
assert_eq!(
&Expr::Value(Value::Null),
expr_from_projection(only(&select.projection)),
);
}
#[test]
fn parse_escaped_single_quote_string_predicate() {
use self::BinaryOperator::*;
let sql = "SELECT id, fname, lname FROM customer \
WHERE salary <> 'Jim''s salary'";
let ast = verified_only_select(sql);
assert_eq!(
Some(Expr::BinaryOp {
left: Box::new(Expr::Identifier(Ident::new("salary"))),
op: NotEq,
right: Box::new(Expr::Value(Value::SingleQuotedString(
"Jim's salary".to_string()
)))
}),
ast.selection,
);
}
#[test]
fn parse_number() {
let expr = verified_expr("1.0");
#[cfg(feature = "bigdecimal")]
assert_eq!(
expr,
Expr::Value(Value::Number(bigdecimal::BigDecimal::from(1)))
);
#[cfg(not(feature = "bigdecimal"))]
assert_eq!(expr, Expr::Value(Value::Number("1.0".into())));
}
#[test]
fn parse_approximate_numeric_literal() {
let expr = verified_expr("1.0E2");
#[cfg(feature = "bigdecimal")]
assert_eq!(
expr,
Expr::Value(Value::Number(bigdecimal::BigDecimal::from(10)))
);
#[cfg(not(feature = "bigdecimal"))]
assert_eq!(expr, Expr::Value(Value::Number("1.0E2".into())));
}
#[test]
fn parse_compound_expr_1() {
use self::BinaryOperator::*;
use self::Expr::*;
let sql = "a + b * c";
assert_eq!(
BinaryOp {
left: Box::new(Identifier(Ident::new("a"))),
op: Plus,
right: Box::new(BinaryOp {
left: Box::new(Identifier(Ident::new("b"))),
op: Multiply,
right: Box::new(Identifier(Ident::new("c")))
})
},
verified_expr(sql)
);
}
#[test]
fn parse_compound_expr_2() {
use self::BinaryOperator::*;
use self::Expr::*;
let sql = "a * b + c";
assert_eq!(
BinaryOp {
left: Box::new(BinaryOp {
left: Box::new(Identifier(Ident::new("a"))),
op: Multiply,
right: Box::new(Identifier(Ident::new("b")))
}),
op: Plus,
right: Box::new(Identifier(Ident::new("c")))
},
verified_expr(sql)
);
}
#[test]
fn parse_unary_math() {
use self::Expr::*;
let sql = "- a + - b";
assert_eq!(
BinaryOp {
left: Box::new(UnaryOp {
op: UnaryOperator::Minus,
expr: Box::new(Identifier(Ident::new("a"))),
}),
op: BinaryOperator::Plus,
right: Box::new(UnaryOp {
op: UnaryOperator::Minus,
expr: Box::new(Identifier(Ident::new("b"))),
}),
},
verified_expr(sql)
);
}
#[test]
fn parse_is_null() {
use self::Expr::*;
let sql = "a IS NULL";
assert_eq!(
IsNull(Box::new(Identifier(Ident::new("a")))),
verified_expr(sql)
);
}
#[test]
fn parse_is_not_null() {
use self::Expr::*;
let sql = "a IS NOT NULL";
assert_eq!(
IsNotNull(Box::new(Identifier(Ident::new("a")))),
verified_expr(sql)
);
}
#[test]
fn parse_not_precedence() {
// 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), Expr::BinaryOp {
op: BinaryOperator::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), Expr::UnaryOp {
op: UnaryOperator::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),
Expr::UnaryOp {
op: UnaryOperator::Not,
expr: Box::new(Expr::Between {
expr: Box::new(Expr::Value(number("1"))),
low: Box::new(Expr::Value(number("1"))),
high: Box::new(Expr::Value(number("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),
Expr::UnaryOp {
op: UnaryOperator::Not,
expr: Box::new(Expr::BinaryOp {
left: Box::new(Expr::Value(Value::SingleQuotedString("a".into()))),
op: BinaryOperator::NotLike,
right: Box::new(Expr::Value(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),
Expr::UnaryOp {
op: UnaryOperator::Not,
expr: Box::new(Expr::InList {
expr: Box::new(Expr::Identifier("a".into())),
list: vec![Expr::Value(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!(
Expr::BinaryOp {
left: Box::new(Expr::Identifier(Ident::new("name"))),
op: if negated {
BinaryOperator::NotLike
} else {
BinaryOperator::Like
},
right: Box::new(Expr::Value(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!(
Expr::IsNull(Box::new(Expr::BinaryOp {
left: Box::new(Expr::Identifier(Ident::new("name"))),
op: if negated {
BinaryOperator::NotLike
} else {
BinaryOperator::Like
},
right: Box::new(Expr::Value(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!(
Expr::InList {
expr: Box::new(Expr::Identifier(Ident::new("segment"))),
list: vec![
Expr::Value(Value::SingleQuotedString("HIGH".to_string())),
Expr::Value(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!(
Expr::InSubquery {
expr: Box::new(Expr::Identifier(Ident::new("segment"))),
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!(
Expr::Between {
expr: Box::new(Expr::Identifier(Ident::new("age"))),
low: Box::new(Expr::Value(number("25"))),
high: Box::new(Expr::Value(number("32"))),
negated,
},
select.selection.unwrap()
);
}
chk(false);
chk(true);
}
#[test]
fn parse_between_with_expr() {
use self::BinaryOperator::*;
let sql = "SELECT * FROM t WHERE 1 BETWEEN 1 + 2 AND 3 + 4 IS NULL";
let select = verified_only_select(sql);
assert_eq!(
Expr::IsNull(Box::new(Expr::Between {
expr: Box::new(Expr::Value(number("1"))),
low: Box::new(Expr::BinaryOp {
left: Box::new(Expr::Value(number("1"))),
op: Plus,
right: Box::new(Expr::Value(number("2"))),
}),
high: Box::new(Expr::BinaryOp {
left: Box::new(Expr::Value(number("3"))),
op: Plus,
right: Box::new(Expr::Value(number("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!(
Expr::BinaryOp {
left: Box::new(Expr::BinaryOp {
left: Box::new(Expr::Value(number("1"))),
op: BinaryOperator::Eq,
right: Box::new(Expr::Value(number("1"))),
}),
op: BinaryOperator::And,
right: Box::new(Expr::Between {
expr: Box::new(Expr::BinaryOp {
left: Box::new(Expr::Value(number("1"))),
op: BinaryOperator::Plus,
right: Box::new(Expr::Identifier(Ident::new("x"))),
}),
low: Box::new(Expr::Value(number("1"))),
high: Box::new(Expr::Value(number("2"))),
negated: false,
}),
},
select.selection.unwrap(),
)
}
#[test]
fn parse_select_order_by() {
fn chk(sql: &str) {
let select = verified_query(sql);
assert_eq!(
vec![
OrderByExpr {
expr: Expr::Identifier(Ident::new("lname")),
asc: Some(true),
},
OrderByExpr {
expr: Expr::Identifier(Ident::new("fname")),
asc: Some(false),
},
OrderByExpr {
expr: Expr::Identifier(Ident::new("id")),
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![
OrderByExpr {
expr: Expr::Identifier(Ident::new("lname")),
asc: Some(true),
},
OrderByExpr {
expr: Expr::Identifier(Ident::new("fname")),
asc: Some(false),
},
],
select.order_by
);
assert_eq!(Some(Expr::Value(number("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![
Expr::Identifier(Ident::new("lname")),
Expr::Identifier(Ident::new("fname")),
],
select.group_by
);
}
#[test]
fn parse_select_having() {
let sql = "SELECT foo FROM bar GROUP BY foo HAVING COUNT(*) > 1";
let select = verified_only_select(sql);
assert_eq!(
Some(Expr::BinaryOp {
left: Box::new(Expr::Function(Function {
name: ObjectName(vec![Ident::new("COUNT")]),
args: vec![Expr::Wildcard],
over: None,
distinct: false
})),
op: BinaryOperator::Gt,
right: Box::new(Expr::Value(number("1")))
}),
select.having
);
let sql = "SELECT 'foo' HAVING 1 = 1";
let select = verified_only_select(sql);
assert!(select.having.is_some());
}
#[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!(
&Expr::Cast {
expr: Box::new(Expr::Identifier(Ident::new("id"))),
data_type: DataType::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",
);
verified_stmt("SELECT CAST(id AS numeric) FROM customer");
one_statement_parses_to(
"SELECT CAST(id AS dec) FROM customer",
"SELECT CAST(id AS numeric) FROM customer",
);
one_statement_parses_to(
"SELECT CAST(id AS decimal) FROM customer",
"SELECT CAST(id AS numeric) FROM customer",
);
}
#[test]
fn parse_array_datatype() {
let sql = "SELECT CAST('{{1,2},{3,4}}' AS int ARRAY)";
let select = all_dialects().unverified_only_select(sql);
assert_eq!(
&Expr::Cast {
expr: Box::new(Expr::Value(Value::SingleQuotedString(
"{{1,2},{3,4}}".to_owned()
))),
data_type: DataType::Array(Box::new(DataType::Int)),
},
expr_from_projection(only(&select.projection))
);
}
#[test]
fn parse_extract() {
let sql = "SELECT EXTRACT(YEAR FROM d)";
let select = verified_only_select(sql);
assert_eq!(
&Expr::Extract {
field: ExtractField::Year,
expr: Box::new(Expr::Identifier(Ident::new("d"))),
},
expr_from_projection(only(&select.projection)),
);
one_statement_parses_to("SELECT EXTRACT(year from d)", "SELECT EXTRACT(YEAR FROM d)");
for extract_field in &[
"MILLENIUM",
"CENTURY",
"DECADE",
"YEAR",
"ISOYEAR",
"QUARTER",
"MONTH",
"DAY",
"HOUR",
"MINUTE",
"SECOND",
"MILLISECONDS",
"MICROSECONDS",
"TIMEZONE",
"TIMEZONE_HOUR",
"TIMEZONE_MINUTE",
"WEEK",
"DOY",
"DOW",
"ISODOW",
"EPOCH",
] {
let unquoted = format!("SELECT EXTRACT({} FROM d)", extract_field);
verified_stmt(&unquoted);
// Quoted strings do not re-serialize to the same thing that they were
// parsed from, while not ideal databases only supports literal
// strings, (not column values) for `extract`, so it's not like this
// can be confused for a column
one_statement_parses_to(
&format!("SELECT EXTRACT('{}' FROM d)", extract_field),
&unquoted,
);
}
let res = parse_sql_statements("SELECT EXTRACT(MILLISECOND FROM d)");
assert_eq!(
ParserError::ParserError("Expected valid extract field, found: MILLISECOND".to_string()),
res.unwrap_err()
);
}
#[test]
fn parse_create_table() {
let sql = "CREATE TABLE uk_cities (\
name VARCHAR(100) NOT NULL,\
lat DOUBLE NULL,\
lng DOUBLE,
constrained INT NULL CONSTRAINT pkey PRIMARY KEY NOT NULL UNIQUE CHECK (constrained > 0),
ref INT REFERENCES othertable (a, b))";
let ast = one_statement_parses_to(
sql,
"CREATE TABLE uk_cities (\
name character varying(100) NOT NULL, \
lat double NULL, \
lng double, \