Re: [SQL] what is "cost"?

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: holston(at)itd(dot)nrl(dot)navy(dot)mil (Gregory Holston)
Cc: pgsql-sql(at)hub(dot)org
Subject: Re: [SQL] what is "cost"?
Date: 1999-04-23 21:24:01
Message-ID: 199904232124.RAA14441@candle.pha.pa.us
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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 various
query plans.

--
Bruce Momjian | http://www.op.net/~candle
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+ If your life is a hard drive, | 830 Blythe Avenue
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