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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2001-06-05 17:13:52 +0000 |
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| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2001-06-05 17:13:52 +0000 |
| commit | cdd230d62899455cc07ba1caf68387fb834d5bd2 (patch) | |
| tree | c74a0a5342eb883c0265f7caf2993a93e1eff939 /src/backend/commands/remove.c | |
| parent | 7c579fa12df0def35192e1e3cfc9ea7ab90bb0cb (diff) | |
| download | postgresql-cdd230d62899455cc07ba1caf68387fb834d5bd2.tar.gz postgresql-cdd230d62899455cc07ba1caf68387fb834d5bd2.zip | |
Improve planning of OR indexscan plans: for quals like
WHERE (a = 1 or a = 2) and b = 42
and an index on (a,b), include the clause b = 42 in the indexquals
generated for each arm of the OR clause. Essentially this is an index-
driven conversion from CNF to DNF. Implementation is a bit klugy, but
better than not exploiting the extra quals at all ...
Diffstat (limited to 'src/backend/commands/remove.c')
0 files changed, 0 insertions, 0 deletions