| From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Patrik Kudo <kudo(at)partitur(dot)se> |
| Cc: | pgsql-sql(at)postgreSQL(dot)org |
| Subject: | Re: [SQL] Good Optimization |
| Date: | 1999-07-08 15:40:18 |
| Message-ID: | 199907081540.LAA08894@candle.pha.pa.us |
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| Thread: | |
| Lists: | pgsql-sql |
[Charset iso-8859-1 unsupported, filtering to ASCII...]
> Bruce Momjian wrote:
> >
> > Added to TODO:
> >
> > * In WHERE x=3 AND x=y, add y=3
>
> I don't know if I'm way off, but wouldn't removing "x=y" improve
> performance further?
Let me rewrite it. TODO list updated:
* In WHERE tab1.x=3 AND tab1.x=tab2.y, add tab2.y=3
--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
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