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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-06-13 23:14:49 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-06-13 23:14:49 +0000 |
| commit | c186c93148fdfa5a39972331318eda5318ff5eba (patch) | |
| tree | 31195d72e9b44d701eaa9018e498145f3d46f929 /src/backend/access/gist/gistutil.c | |
| parent | 077811605e07212139c3df503fdaa081690635ca (diff) | |
| download | postgresql-c186c93148fdfa5a39972331318eda5318ff5eba.tar.gz | |
Change the planner to allow indexscan qualification clauses to use
nonconsecutive columns of a multicolumn index, as per discussion around
mid-May (pghackers thread "Best way to scan on-disk bitmaps"). This
turns out to require only minimal changes in btree, and so far as I can
see none at all in GiST. btcostestimate did need some work, but its
original assumption that index selectivity == heap selectivity was
quite bogus even before this.
Diffstat (limited to 'src/backend/access/gist/gistutil.c')
0 files changed, 0 insertions, 0 deletions