postgres

mirror of https://github.com/postgres/postgres.git synced 2025-11-07 19:06:32 +03:00

Files

Tom Lane 4e91824b94 Make some adjustments to reduce platform dependencies in plan selection.

In particular, there was a mathematical tie between the two possible
nestloop-with-materialized-inner-scan plans for a join (ie, we computed
the same cost with either input on the inside), resulting in a roundoff
error driven choice, if the relations were both small enough to fit in
sort_mem.  Add a small cost factor to ensure we prefer materializing the
smaller input.  This changes several regression test plans, but with any
luck we will now have more stability across platforms.

2004-12-02 01:34:18 +00:00

allpaths.c

Clean up handling of inherited-table update queries, per bug report

2004-10-02 22:39:49 +00:00

clausesel.c

Use a hopefully-more-reliable method of detecting default selectivity

2004-11-09 00:34:46 +00:00

costsize.c

Make some adjustments to reduce platform dependencies in plan selection.

2004-12-02 01:34:18 +00:00

indxpath.c

pred_test() logic was being too narrow-minded about where it might find