exec
CREATE TABLE t (i INT PRIMARY KEY, j INT, k INT, l INT)
----

create f=1
t
----

exec
ALTER TABLE t DROP COLUMN j;
----

pop f=1
----
t 1->2: DropColumn
t 2->3: Unknown
t 3->4: Unknown
t 4->5: Unknown
t 5->6: Unknown
t 6->7: PrimaryKeyChange (no column changes)
t 7->8: Unknown
t 8->9: AddHiddenColumn

exec
SET use_declarative_schema_changer=off;
ALTER TABLE t DROP COLUMN k;
----

pop f=1
----
t 9->10: DropColumn
t 10->11: Unknown
t 11->12: AddHiddenColumn
