Comments on: Conditional DDL?

By: Andreas Scherbaum

Andreas Scherbaum — Tue, 26 Aug 2008 08:57:22 +0000

One single thing is not possible: you can’t add the plpgsql language itself if you don’t know if it’s already installed or not.
I wrote a small workaround for this little problem:
http://andreas.scherbaum.la/blog/archives/346-create-language-if-not-exist.html

gregj — Tue, 08 Jul 2008 23:54:58 +0000

David, so what’s wrong with “NOT NULL DEFAULT ” “?? I don’t get it.

wulczer — Fri, 27 Jun 2008 15:26:05 +0000

OK, so instead of EXCEPTION WHEN OTHERS you’d use WHEN duplicate_table OR duplicate_function OR …

depesz — Thu, 26 Jun 2008 07:01:52 +0000

@wulczer:
technically – yes. but in this way it would silently ignore other errors as well – like “bad data type”, bad syntax and so on.

wulczer — Thu, 26 Jun 2008 03:07:10 +0000

You could also wrap the EXECUTE in a BEGIN / EXCEPTION WHEN OTHERS NULL; END block and call your creates and alters through that.

depesz — Thu, 19 Jun 2008 04:44:16 +0000

@David Fetter:
Well, I’m not really MySQL user, so it’s hard for me to say it’s something I got from it.

David Fetter — Wed, 18 Jun 2008 23:09:09 +0000

NOT NULL DEFAULT ” is MySQL cruft. Get rid of it.