| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | chester c young <chestercyoung(at)yahoo(dot)com> |
| Cc: | pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: update syntax |
| Date: | 2002-01-27 03:40:07 |
| Message-ID: | 200201270340.g0R3e7813150@candle.pha.pa.us |
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| Lists: | pgsql-sql |
chester c young wrote:
> thanks, but how would this be done for the same table?
>
> update table1 t1 set (c2, c3 ) =
> ( select c2, c3 from table1 t2 where t1.c1 = t2.c1 and t1.oid < t2.oid
> );
In that 'FROM c1 c2', c2 was a table alias for table c1. That is how
you get the second instance of c1.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
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