Re: update syntax - Mailing list pgsql-sql

From Bruce Momjian
Subject Re: update syntax
Date
Msg-id 200201270340.g0R3e7813150@candle.pha.pa.us
Whole thread Raw
In response to Re: update syntax  (chester c young <chestercyoung@yahoo.com>)
List 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@candle.pha.pa.us               |  (610)
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