Thank you ! Re: Is there any Faster workaround ??
От | Rajesh Kumar Mallah |
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Тема | Thank you ! Re: Is there any Faster workaround ?? |
Дата | |
Msg-id | 3CB35DF8.D26E2055@trade-india.com обсуждение исходный текст |
Ответ на | Is there any Faster workaround ?? (Rajesh Kumar Mallah <mallah@trade-india.com>) |
Ответы |
Optimizer for IN (..) ? / Re: Thank you ! Re: Is there
any Faster workaround ??
|
Список | pgsql-sql |
Thanks so much! i think this ques. has been answered before also in this mailing list sorry for asking... regds mallah. Jean-Luc Lachance wrote: > How about: > > DELETE from t_a where exist (select email from t_b where t_b.email = > t_a.email) > > 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 > > > > regds > > Mallah. > > > > ---------------------------(end of broadcast)--------------------------- > > TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org > > ---------------------------(end of broadcast)--------------------------- > TIP 4: Don't 'kill -9' the postmaster
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