In response to Philippe Lang : > > My goal is to make query... > > select * from indexed_table WHERE data1 > > this_is_a_long_transformation(data2); > > ... as fast as > > select * from indexed_table WHERE data1 > data2; > > ... with the help of the index "long_transformation_index". >
Around 50% of your data comply with your where-condition, i think, this is the reason why the planner decides for a seq-scan. Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header) GnuPG: 0x31720C99, 1006 CCB4 A326 1D42 6431 2EB0 389D 1DC2 3172 0C99 -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
