| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Flavio Henrique Araque Gurgel <fhagur(at)gmail(dot)com>, pgsql-bugs(at)postgresql(dot)org, osalm(at)mirakl(dot)com |
| Subject: | Re: ALTER TABLE documentation or parser bug |
| Date: | 2015-03-21 01:52:54 |
| Message-ID: | 20150321015254.GC13192@momjian.us |
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| Lists: | pgsql-bugs |
On Wed, Dec 3, 2014 at 12:44:34PM -0500, Tom Lane wrote:
> Flavio Henrique Araque Gurgel <fhagur(at)gmail(dot)com> writes:
> > Hello all
> > In the documentation in:
> > http://www.postgresql.org/docs/current/static/sql-altertable.html
>
> > It says that, to rename a constraint, we can use:
>
> > ALTER TABLE [ IF EXISTS ] [ ONLY ] name [ * ]
> > RENAME CONSTRAINT constraint_name TO new_constraint_name
>
> > Who is wrong, parser or documentation (or myself)?
>
> Documentation, evidently: a look at the grammar shows that IF EXISTS has
> been implemented only for a rather haphazard subset of ALTER ... RENAME
> cases, and this isn't one of them.
Rather than fixing the docs, I implemented the feature --- patch
attached.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ Everyone has their own god. +
| Attachment | Content-Type | Size |
|---|---|---|
| alter.diff | text/x-diff | 1.8 KB |
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