"Junaili Lie" <[EMAIL PROTECTED]> writes:
> we encounter issues when deleting from a table based on id (primary key). O=
> n
> certain 'id', it took forever to delete and the i/o is 100% busy.
Almost always, if delete is slow when selecting the same rows is fast,
it's because you've got a trigger performance problem --- most commonly,
there are foreign keys referencing this table from other tables and you
don't have the referencing columns indexed.
regards, tom lane
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TIP 6: explain analyze is your friend
