Re: count * performance issue

am  Thu, dem 06.03.2008, um 12:17:55 +0530 mailte sathiya psql folgendes:
> TRIGGER i can use if i want the count of the whole table, but i require for
> some of the rows with WHERE condition....
>
> so how to do that ???

Okay, in this case a TRIGGER are a bad idea. You can use an INDEX on
this row. Can you show us the output for a EXPLAIN ANALYSE SELECT
count(*) from <your_table> WHERE <your_row> = ... ?


Andreas
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Andreas Kretschmer
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