Re: DELETE FROM A BLACK LIST
От | Achilleus Mantzios |
---|---|
Тема | Re: DELETE FROM A BLACK LIST |
Дата | |
Msg-id | Pine.LNX.4.44.0303051321150.4354-100000@matrix.gatewaynet.com обсуждение исходный текст |
Ответ на | DELETE FROM A BLACK LIST (luca.scaramella@recom.it) |
Список | pgsql-sql |
On Wed, 5 Mar 2003 luca.scaramella@recom.it wrote: > > Hi all, > I have a Blacklist table containing about 1000 ID to delete from another > table (T1 about 1440294 records) > If i use the SQL > > DELETE FROM T1 WHERE T1.ID IN (SELECT BLACKLIST.ID FROM BLACKLIST) > > the operation is very slow . > > There is a faster way to do the same operation?? use EXISTS > > Thanks > Luca > > > > > > > ---------------------------(end of broadcast)--------------------------- > TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org > -- ================================================================== Achilleus Mantzios S/W Engineer IT dept Dynacom Tankers Mngmt Nikis 4, Glyfada Athens 16610 Greece tel: +30-210-8981112 fax: +30-210-8981877 email: achill@matrix.gatewaynet.com mantzios@softlab.ece.ntua.gr
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