see explain in the docs?
http://www.postgresql.org/idocs/index.php?sql-explain.html
or you could use perls timing modules as well
ttfn
Torbjörn Andersson wrote:
>
> Does anyone have any good tips on how to measure the time it takes to
> extecute an SQL-statement in psql?
>
> I'd like to use it in conjunction with EXPLAIN in order to help me determine
> what needs to be optimized as well as checking that my optimization actually
> improved matters...
>
> Best regards
>
> Torbjörn Andersson
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