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
