Incompatibility: ALTER COLUMN DROP DEFAULT #92
Description
This incompatibility is detected by #90.
Spec
https://cloud.google.com/spanner/docs/reference/standard-sql/data-definition-language#alter_table
ALTER TABLE table_name
action
where action is:
...
ALTER [ COLUMN ] column_name
{
data_type [ NOT NULL ] [ DEFAULT ( expression ) ]
| SET OPTIONS ( options_def )
| SET DEFAULT ( expression )
| DROP DEFAULT
}
...
Reproducing input
ALTER TABLE T ALTER COLUMN expr DROP DEFAULT;"
Current behavior
syntax error:testdata/column_default_values.test:6:33: expect ident: BOOL, INT64, FLOAT32, FLOAT64, DATE, TIMESTAMP, NUMERIC, JSON, STRING, BYTES, but: DROP
6: ALTER TABLE T ALTER COLUMN expr DROP DEFAULT;
^~~~