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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-11-14 23:54:36 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-11-14 23:54:36 +0000 |
| commit | 659d3b2b0ecda0726957c106522f9cbd477cf4ee (patch) | |
| tree | 5b657add3a305c0e931021eb03c5d10ea42621c7 /src/include/optimizer/restrictinfo.h | |
| parent | c42d63335211852d6253b4240cb69ed84d0f1d0f (diff) | |
| download | postgresql-659d3b2b0ecda0726957c106522f9cbd477cf4ee.tar.gz postgresql-659d3b2b0ecda0726957c106522f9cbd477cf4ee.zip | |
Restore the former RestrictInfo field valid_everywhere (but invert the flag
sense and rename to "outerjoin_delayed" to more clearly reflect what it
means). I had decided that it was redundant in 8.1, but the folly of this
is exposed by a bug report from Sebastian Böck. The place where it's
needed is to prevent orindxpath.c from cherry-picking arms of an outer-join
OR clause to form a relation restriction that isn't actually legal to push
down to the relation scan level. There may be some legal cases that this
forbids optimizing, but we'd need much closer analysis to determine it.
Diffstat (limited to 'src/include/optimizer/restrictinfo.h')
| -rw-r--r-- | src/include/optimizer/restrictinfo.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/include/optimizer/restrictinfo.h b/src/include/optimizer/restrictinfo.h index 0715df59d68..e19b5a67627 100644 --- a/src/include/optimizer/restrictinfo.h +++ b/src/include/optimizer/restrictinfo.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/optimizer/restrictinfo.h,v 1.34 2005/10/15 02:49:45 momjian Exp $ + * $PostgreSQL: pgsql/src/include/optimizer/restrictinfo.h,v 1.34.2.1 2005/11/14 23:54:36 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -19,6 +19,7 @@ extern RestrictInfo *make_restrictinfo(Expr *clause, bool is_pushed_down, + bool outerjoin_delayed, Relids required_relids); extern List *make_restrictinfo_from_bitmapqual(Path *bitmapqual, bool is_pushed_down, |