| Lists: | pgsql-novice |
|---|
| From: | Andy Halsall <halsall_andy(at)hotmail(dot)com> |
|---|---|
| To: | "postgresql (dot)org novice list" <pgsql-novice(at)postgresql(dot)org> |
| Subject: | Functions and query analysis - EXPLAIN |
| Date: | 2012-02-10 17:07:21 |
| Message-ID: | BLU123-W6BE97326944EC920DF5E2F5780@phx.gbl |
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| Lists: | pgsql-novice |
Is it possible to use EXPLAIN from inside a function? Have seen this post http://archives.postgresql.org/pgsql-general/2011-04/msg00750.php but can't get it to work on even a simple query. Need it to work on a query in a function with a UNION.
Perhaps there's a better way of determining if my function is using the indexes I'd like it to use?
Thanks,
Andy
| From: | Andreas Kretschmer <akretschmer(at)spamfence(dot)net> |
|---|---|
| To: | pgsql-novice(at)postgresql(dot)org |
| Subject: | Re: Functions and query analysis - EXPLAIN |
| Date: | 2012-02-10 17:54:31 |
| Message-ID: | 20120210175431.GA13740@tux |
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| Lists: | pgsql-novice |
Andy Halsall <halsall_andy(at)hotmail(dot)com> wrote:
> Is it possible to use EXPLAIN from inside a function? Have seen this post http:
> //archives.postgresql.org/pgsql-general/2011-04/msg00750.php but can't get it
> to work on even a simple query. Need it to work on a query in a function with a
> UNION.
>
> Perhaps there's a better way of determining if my function is using the indexes
> I'd like it to use?
Not sure if i understand you, but i think, you are looking for the
module AUTO_EXPLAIN. With this, and auto_explain.log_nested_statements =
on, you can see the explain-output in your log.
Andreas
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