Re: [PERFORM] HELP speed up my Postgres

On Thu, 25 Nov 2004 14:00:32 +0800, JM <jerome(at)gmanmi(dot)tv> wrote:
> update SUBSCRIPTIONTABLE set ACTIVEFLAG='Y' where mobile_num in (select
> mobile_num from LOADED_MOBILE_NUMBERS)

does loaded_mobile_numbers have a primary key or index on mobile_num?
same for subscriptiontable?
have you analyzed both tables?
is mobile_num the same type in both tables?

how does this query compare?
update SUBSCRIPTIONTABLE set ACTIVEFLAG='Y'
from loaded_mobile_numbers
where subscriptiontable.mobile_num = LOADED_MOBILE_NUMBERS.mobile_num

klint.

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