| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Gregory Stark <stark(at)enterprisedb(dot)com> |
| Cc: | pgsql-hackers list <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: New style of hash join proposal |
| Date: | 2008-03-17 02:34:16 |
| Message-ID: | [email protected] |
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| Lists: | pgsql-hackers |
Gregory Stark <stark(at)enterprisedb(dot)com> writes:
> We currently execute a lot of joins as Nested Loops which would be more
> efficient if we could batch together all the outer keys and execute a single
> inner bitmap index scan for all of them together.
Please give an example of what you're talking about that you think we
can't do now.
regards, tom lane
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