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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-07-29 21:40:26 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-07-29 21:40:26 +0000 |
| commit | 81f2d972a82fd86b5a01b2ddea7b8e866a760f5e (patch) | |
| tree | e4891918bd61fc205005b86f7c49250ccd574425 /src | |
| parent | f4bbe13491cd3407d383a72b7b0dee2c707a4ef7 (diff) | |
| download | postgresql-81f2d972a82fd86b5a01b2ddea7b8e866a760f5e.tar.gz postgresql-81f2d972a82fd86b5a01b2ddea7b8e866a760f5e.zip | |
Back-patch fix for NOT-below-a-NOT case.
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/optimizer/prep/prepqual.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/backend/optimizer/prep/prepqual.c b/src/backend/optimizer/prep/prepqual.c index 8d92ee317a0..de72ad8141b 100644 --- a/src/backend/optimizer/prep/prepqual.c +++ b/src/backend/optimizer/prep/prepqual.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/optimizer/prep/prepqual.c,v 1.48 2004/12/31 22:00:20 pgsql Exp $ + * $PostgreSQL: pgsql/src/backend/optimizer/prep/prepqual.c,v 1.48.4.1 2005/07/29 21:40:26 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -335,9 +335,10 @@ push_nots(Expr *qual) { /* * Another NOT cancels this NOT, so eliminate the NOT and stop - * negating this branch. + * negating this branch. But search the subexpression for more + * NOTs to simplify. */ - return get_notclausearg(qual); + return find_nots(get_notclausearg(qual)); } else { |