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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-11-30 17:10:25 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-11-30 17:10:25 +0000 |
| commit | 2883fbb80805263dc3e2299d49583a42a6c9e9c0 (patch) | |
| tree | 23df259db844756f5fe835c6d733c08708cac23e /src/backend/utils/adt/datetime.c | |
| parent | dd13bf167b24fc497a7ce7f1897a89ae3ac40c9f (diff) | |
| download | postgresql-2883fbb80805263dc3e2299d49583a42a6c9e9c0.tar.gz postgresql-2883fbb80805263dc3e2299d49583a42a6c9e9c0.zip | |
Tweak choose_bitmap_and() heuristics in the light of example provided in bug
#2075: consider an index redundant if any of its index conditions were already
used, rather than if all of them were. Also, make the selectivity comparison
a bit fuzzy, so that very small differences in estimated selectivities don't
skew the results.
Diffstat (limited to 'src/backend/utils/adt/datetime.c')
0 files changed, 0 insertions, 0 deletions