Re: [SQL] what is "cost"?
| От | Bruce Momjian |
|---|---|
| Тема | Re: [SQL] what is "cost"? |
| Дата | |
| Msg-id | 199904232124.RAA14441@candle.pha.pa.us обсуждение исходный текст |
| Ответ на | what is "cost"? (Gregory Holston <holston@itd.nrl.navy.mil>) |
| Ответы |
Re: [SQL] what is "cost"?
|
| Список | pgsql-sql |
> > Hi All, > > I just did an explain and was wondering what is meant by cost. I just > got a 72.983 cost from a query I found not working. Any info or pointers > would be appreciated. Just added to explain manual page: The cost value is only meaningful to the optimizer in comparing variousquery plans. -- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
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