Hey,
I'm giving DOMAINs a shot and created a simple one with a CHECK on PostgreSQL 9.4.4. Sadly, when the check fails, the thrown error (23514, check_violation) doesn't seem to contain the column information in the "c" field. Should it? Is it just not implemented?
http://www.postgresql.org/docs/9.4/static/errcodes-appendix.html says «As of PostgreSQL 9.3, complete coverage for this feature exists only for errors in SQLSTATE class 23 (integrity constraint violation), but this is likely to be expanded in future.» I believe CHECK violation is in the 23th class.
Thanks in advance!
Andri
An example might help but type input functions do not require nor receive column information since it is possible to be processing a simple literal that is not associated with any ore-defined table or view column.
David J.
