| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Rob Schall <rschall(at)callone(dot)net> |
| Cc: | pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: Problem with an Identical Query |
| Date: | 2007-03-01 15:36:01 |
| Message-ID: | 24439.1172763361@sss.pgh.pa.us |
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| Lists: | pgsql-bugs |
Rob Schall <rschall(at)callone(dot)net> writes:
> I have to queries. One runs in about 2 seconds. The other takes upwards
> of 2 minutes. I have a temp table that is created with 2 columns. This
> table is joined with the larger database of call detail records.
> However, these 2 queries are handled very differently.
This is not a bug.
You might have better results if you ANALYZE the temp table before
trying to join it with the bigger table. Otherwise, post EXPLAIN
ANALYZE (not just EXPLAIN) results in pgsql-performance, and perhaps
someone can help you.
regards, tom lane
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