valgog <[EMAIL PROTECTED]> wrote .. > On Jul 23, 7:00 pm, [EMAIL PROTECTED] (Tom Lane) wrote: > > valgog <[EMAIL PROTECTED]> writes: > > > how to build an multicolumn index with one column order ASCENDING and > > > another column order DESCENDING? > > > > Use 8.3 ;-) > > > > In existing releases you could fake it with a custom reverse-sorting > > operator class, but it's a pain in the neck to create one.
I've often gotten what I want by using a calculated index on (f1, -f2). ORDER BY will take an expression, e.g. ORDER BY f1, -f2. Simpler than a custom operator. ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
