psql (9.6.7, server 11.3)
I have a table...
dvdb=# \d+ dvm_events;
Table "dvm.dvm_events"
Column | Type | Modifiers | Storage | Stats target | Description
------------------+--------------------------+-----------+----------+--------------+----------------------------------------------------------------------
dvm_id | integer | not null | plain | |
project | character varying | not null | extended | |
status | character varying | | extended | |
Check constraints:
"dvm_events_status_check" CHECK (status::text = ANY (ARRAY['passed'::character varying, 'failed'::character varying, NULL::character varying]::text[]))
(There's a lot more to the table than what you see here, but I took it out because it didn't look relevant)
I believe it should disallow an insert with a status of "foo", but...
dvdb=# insert into dvm_events (dvm_id,project,status) values (99999999,'mero','foo');
INSERT 0 1
INSERT 0 1
This is outside of a transaction and definitely not in a transaction with deferred constraint checking.
Check constraints seem to work fine if I create a test table having a constrained column. But this existing table seems to have constraints disabled for some reason.
What could cause this ?