Re: ALTER TABLE ... IF EXISTS feature?

Robert Haas wrote:
> With respect to the syntax itself, I have mixed feelings. On the one
> hand, I'm a big fan of CREATE IF NOT EXISTS and DROP IF EXISTS
> precisely because I believe they handle many common cases that people
> want in real life without much hullabaloo. But, there's clearly some
> limit to what can reasonably be done this way. At some point, what
> you really want is some kind of meta-language where you can write
> things like:
>
> IF EXISTS TABLE t1 THEN
> ALTER TABLE t1 DROP CONSTRAINT IF EXISTS t1_constr;
> END IF;

FYI, I have felt this way for a while. IF EXISTS seemed like something
that should never have been added as an inline SQL command option; it
just crept in, and kept growing.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ It's impossible for everything to be true. +