Re: [SQL] what is "cost"?

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От Bruce Momjian
Тема Re: [SQL] what is "cost"?
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Msg-id 199904232124.RAA14441@candle.pha.pa.us
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Ответ на what is "cost"?  (Gregory Holston <holston@itd.nrl.navy.mil>)
Ответы Re: [SQL] what is "cost"?
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> 
> 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.

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