Re: Delete Question - Mailing list pgsql-general

From Alex
Subject Re: Delete Question
Date
Msg-id 439694A7.6020401@meerkatsoft.com
Whole thread Raw
In response to Re: Delete Question  (hubert depesz lubaczewski <depesz@gmail.com>)
List pgsql-general
Thanks ,
this one works beautifully.

Alex

PS: also thanks to the other suggestions, have a look at this one


hubert depesz lubaczewski wrote:

> On 12/7/05, *Alex* <alex@meerkatsoft.com
> <mailto:alex@meerkatsoft.com>> wrote:
>
>     I have a table where I store changes made to an order. The looks like
>     ProdID, ChangeDate, Change1, Change2, ... etc.
>     Some ProdIDs have multiple records.
>     Is there an easy way to delete all records of a ProdID except the
>     most
>     recent (ChangeDate is timestamp) one? Preferably in one SQL statement?
>
>
> delete from table_name where exists (select * from table_name x where
> x.prodid = table_name.prodid and x.changedate > table_name.changedate);
>
> this should work.
>
> depesz


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