Hi Keith:
--- Keith Gray <keith(at)heart(dot)com(dot)au> wrote:
> Help,
>
> I have just been comparing some large table
> performance
> under 7.1 using the
>
> select max(primary key)from table;
>
> We are using this for various functions including
> sequence.
>
Try using the following as alternative :
SELECT primary_key
FROM table
ORDER BY primary_key desc
LIMIT 1;
This should work if primary_key is indexes.
As of now, Max() doesn't utilizes the indices hence
it always do a sequential scan.
Hope that helps,
regards,
ludwig.
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