go KEY802207 wrote:
> Hi, pgsql-general.
>
> Tell me please, how to update a set of rows using order-
> something like :
>
> update my_table set counter1=nextval('my_seq') order by counter2 ;
The way this is usually done is to issue a SELECT with an ORDER BY
clause, then update the rows that are returned. Many DBMSs have a
SELECT FOR UPDATE and then UPDATE WHERE CURRENT OF CURSOR, but a quick
read of the documentation doesn't list such constructs for PostgreSQL,
so if not you'll need to use separate statements.
--
Guy Rouillier
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