mirrors/datafusion-sqlparse
1
0
Fork 0
mirror of https://github.com/apache/datafusion-sqlparser-rs.git synced 2025-11-02 07:57:53 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Support DROP CONSTRAINT [ IF EXISTS ] <name> [ CASCADE ] (#396)

Browse source 
* adding support for DROP CONSTRAINT [ IF EXISTS ] <name>

* implementing [ CASCADE ] for DROP CONSTRAINT
This commit is contained in:
tvallotton 2022-02-08 12:34:09 -03:00 • committed by GitHub
parent e4959696b5
commit c4cbc8340a
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 76 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

48
tests/sqlparser_common.rs
View file

@ -2077,6 +2077,54 @@ fn parse_alter_table_alter_column_type() {
);
}
#[test]
fn parse_alter_table_drop_constraint() {
let alter_stmt = "ALTER TABLE tab";
match verified_stmt("ALTER TABLE tab DROP CONSTRAINT constraint_name CASCADE") {
Statement::AlterTable {
name,
operation:
AlterTableOperation::DropConstraint {
name: constr_name,
if_exists,
cascade,
},
} => {
assert_eq!("tab", name.to_string());
assert_eq!("constraint_name", constr_name.to_string());
assert!(!if_exists);
assert!(cascade);
}
_ => unreachable!(),
}
match verified_stmt("ALTER TABLE tab DROP CONSTRAINT IF EXISTS constraint_name") {
Statement::AlterTable {
name,
operation:
AlterTableOperation::DropConstraint {
name: constr_name,
if_exists,
cascade,
},
} => {
assert_eq!("tab", name.to_string());
assert_eq!("constraint_name", constr_name.to_string());
assert!(if_exists);
assert!(!cascade);
}
_ => unreachable!(),
}
let res = Parser::parse_sql(
&GenericDialect {},
&format!("{} DROP CONSTRAINT is_active TEXT", alter_stmt),
);
assert_eq!(
ParserError::ParserError("Expected end of statement, found: TEXT".to_string()),
res.unwrap_err()
);
}
#[test]
fn parse_bad_constraint() {
let res = parse_sql_statements("ALTER TABLE tab ADD");