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Support SELECT DISTINCT

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This commit is contained in:
Nickolay Ponomarev 2019-04-20 14:15:05 +03:00
parent 31b6076d05
commit bbf1805729
3 changed files with 17 additions and 1 deletions
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12
tests/sqlparser_generic.rs
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@ -50,11 +50,23 @@ fn parse_where_delete_statement() {
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_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_wildcard() {
let sql = "SELECT * FROM foo";