Hi, say I have three tables a,b,c with lots of columns (say 10 for each table). Using psql command line, why does SELECT a.*,b.*,c.* FROM a,b,c takes much more longer (in my specifc case 3 times) than only selecting one column like SELECT a.oid, b.oid, c.oid FROM a,b,c. This is on 7.0. Can I play with buffer sizes? Indexes exist on most of the columns. Columns in the second line can be arbitrary. Dirk
