Hi, Is there some way to find out meta-information about the columns generated by any SELECT query? If the SELECT returns values from a regular table or a view, I can use pg_class and pg_attribute to get the info I need: CREATE TABLE foobar (quant int); SELECT quant FROM foobar; SELECT attname, attnum FROM pg_attribute, pg_class WHERE attrelid=pg_class.oid AND relname='foobar'; But what if the columns belong to a "virtual" table instead, as per the (silly) example below? SELECT 1, 2*quant FROM foobar; Thanks in advance for any help you might give me! Best regards, Dario Teixeira -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general