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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2003-08-22 20:26:43 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2003-08-22 20:26:43 +0000 |
| commit | 92ee2528d8bf46739a460e3395057416c53e10d1 (patch) | |
| tree | bd7cb075e5719bc545fd78410a9a1f99c8ef0479 /src/backend/utils/adt/timestamp.c | |
| parent | 38e2bf6283da3fa4d544cce1fdc44a83f117cd2a (diff) | |
| download | postgresql-92ee2528d8bf46739a460e3395057416c53e10d1.tar.gz postgresql-92ee2528d8bf46739a460e3395057416c53e10d1.zip | |
Tweak processing of multiple-index-scan plans to reduce overhead when
handling many-way scans: instead of re-evaluating all prior indexscan
quals to see if a tuple has been fetched more than once, use a hash table
indexed by tuple CTID. But fall back to the old way if the hash table
grows to exceed SortMem.
Diffstat (limited to 'src/backend/utils/adt/timestamp.c')
0 files changed, 0 insertions, 0 deletions