| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andreas Kretschmer <akretschmer(at)spamfence(dot)net> |
| Cc: | Steve Horn <steve(at)stevehorn(dot)cc>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Query slow as Function |
| Date: | 2012-02-18 16:37:22 |
| Message-ID: | 27854.1329583042@sss.pgh.pa.us |
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| Lists: | pgsql-performance |
Andreas Kretschmer <akretschmer(at)spamfence(dot)net> writes:
> You can check the plan with the auto_explain - Extension, and you can
> force the planner to create a plan based on the actual input-value by
> using dynamic SQL (EXECUTE 'your query string' inside the function)
Steve *is* using EXECUTE, so that doesn't seem to be the answer. I'm
wondering about datatype mismatches myself --- the function form is
forcing the parameter to be char(9), which is not a constraint imposed
in the written-out query. There are lots of other possibilities
though. It would be hard to say much without a self-contained example
to try.
regards, tom lane
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