Re: [HACKERS] debug flag
Bruce Momjian <maillist@candle.pha.pa.us>
From: Bruce Momjian <maillist@candle.pha.pa.us>
To: sthomas@cise.ufl.edu (Shiby Thomas)
Cc: pgsql-hackers@postgreSQL.org
Date: 1998-01-19T21:55:22Z
Lists: pgsql-hackers
> > Hi, > > If I want to compile the PostgreSQL 6.2.1 code with the -g flag, which Makefile > should I add it. I would like to run it thru a debugger. I am compiling it > with gcc; so I should be able to use xgdb, right? > > The sort cost in the planner is assumed to be 0. So, there is an unfair bias > towards sort-merge join in the optimizer. If I want to add a sort cost, will > it be enough to add it in the make_sortplan() function in > optimizer/plan/planner.c. > Is the size of the relation to be sorted estimated at that time? > If not what is the best way to do this? I think this is fixed in 6.3. Beta is Feb 1. -- Bruce Momjian maillist@candle.pha.pa.us