The following bug has been logged online:
Bug reference: 2974
Logged by: Michal Schwarz
Email address: misch(at)czechin(dot)cz
PostgreSQL version: 8.1.7
Operating system: Fedora Core 6
Description: broken CHECK constraint with varchar
Details:
CREATE TABLE t (c VARCHAR(20));
ALTER TABLE t ADD CONSTRAINT xyz CHECK (c IN ('A','B','C'));
INSERT INTO t VALUES ('A');
Results:
ERROR: attribute 1 has wrong type
DETAIL: Table has type character varying, but query expects character
varying.
In previous versions, everything worked correctly. Problem arised in 8.1.7
(maybe only in Fedora release???). When i returned back to 8.1.6, everything
worked again.