| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "Lawrence, Ramon" <ramon(dot)lawrence(at)ubc(dot)ca> |
| Cc: | pgsql-hackers(at)postgresql(dot)org, "Michael Henderson" <mikecubed(at)gmail(dot)com> |
| Subject: | Re: Potential Join Performance Issue |
| Date: | 2009-03-26 17:17:39 |
| Message-ID: | 23623.1238087859@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
"Lawrence, Ramon" <ramon(dot)lawrence(at)ubc(dot)ca> writes:
> Attached is a patch that will disable the physical-tlist optimization
> for hash join if the number of batches is greater than 1. The patch and
> performance results were created by Michael Henderson (graduate
> student).
I've applied the attached modified version of this patch.
regards, tom lane
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| unknown_filename | text/plain | 4.4 KB |
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