Postgres Pro
Downloads
Home   >   mailing lists

Re: BUG #15710: ADD COLUMN IF NOT EXISTS adds constraint anyways - Mailing list pgsql-bugs

From Tom Lane
Subject Re: BUG #15710: ADD COLUMN IF NOT EXISTS adds constraint anyways
Date
Msg-id 10528.1553177890@sss.pgh.pa.us
Whole thread Raw
In response to BUG #15710: ADD COLUMN IF NOT EXISTS adds constraint anyways  (PG Bug reporting form <noreply@postgresql.org>)
List pgsql-bugs
Tree view 
PG Bug reporting form <noreply@postgresql.org> writes:
> If I want to add a column to a table which and the column may or may not
> already exist, the specified column constraint like UNIQUE is added every
> time the command is issued, regardless if the column gets added or not.

Yeah, this is the same thing previously reported at

https://www.postgresql.org/message-id/flat/152509815280.19803.16118194452213577808%40wrigleys.postgresql.org

We haven't got further than sketching a design for a fix :-(

            regards, tom lane

pgsql-bugs by date:

Previous
From: Pavel Stehule
Date:
Subject: Re: BUG #15709: if drop exists syntax
Next
From: PG Bug reporting form
Date:
Subject: BUG #15711: pgadmin install fails with missing python-blinker and python-flast packages