> Uwe Schroeder, 26.01.2011 08:34: > > I have a query like this: > > > > SELECT a,b,c, (select problem from other_table where id=a) as problem > > FROM mytable WHERE a=1 > > > > So far so good. Actually "problem" always resolves to one record, so it's > > not the "multiple records returned" problem. > > > > What I try to do is this: > > > > SELECT a,b,c, (select problem from other_table where id=a) as problem > > FROM mytable WHERE a=1 and problem = 3 > > > > see the "problem=3" part in the where clause? The error I get is > > > > SQLError: (ProgrammingError) column "problem" does not exist > > You need to wrap the whole SELECT in order to be able to use the column > alias: > > SELECT * > FROM ( > SELECT a, > b, > c, > (select problem from other_table where id=a) as problem > FROM mytable > ) t > WHERE a=1 > AND problem = 3 > > Regards > Thomas Thanks a lot Thomas! there's the reason why open source like postgresql is far supperior to anything commercial - an answer when you need it! Works like a charm now. Uwe -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
