Re: Optimizer generates bad plans.
От | Bruce Momjian |
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Тема | Re: Optimizer generates bad plans. |
Дата | |
Msg-id | 200209192209.g8JM96L03130@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Optimizer generates bad plans. (Kris Jurka <jurka@ejurka.com>) |
Ответы |
Re: Optimizer generates bad plans.
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Список | pgsql-hackers |
Congratulations. That is the largest plan I have ever seen. ;-) --------------------------------------------------------------------------- Kris Jurka wrote: > While adding schema support to the JDBC Driver, I came across a query > which occasionally generates some spectacularly bad plans. I have > attached the query and explain analyze outputs against today's cvs head > for queries that take between 9 and 845941 msec. In the JDBC Driver I > will specify a reasonable join order using explicit JOINs, but I thought > someone might be interested in a test case for the optimizer. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001+ If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania19073
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