On Tue, 2002-04-09 at 14:54, Rajesh Kumar Mallah wrote:
> Hi folks,
>
> We require to do below or similar quite often
>
> DELETE from t_a where email in (select email from t_b);
>
> everyone knows "IN" is pain fully slow currently in pgsql
> is the any fster alternative to above query
>
DELETE from t_a where exists (select email from t_b where t_b.email =
t_a.email);
--
David Stanaway