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| author | Tom Lane <tgl@sss.pgh.pa.us> | 1999-08-01 04:54:25 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 1999-08-01 04:54:25 +0000 |
| commit | 44878506d811dcb5e7f4ea6450c9e6b8544f2651 (patch) | |
| tree | c4b6c4af148bab7667b2b93bdec2f060bf638d80 /src/backend/parser/parse_expr.c | |
| parent | f851c6b07deac83e03de3e77221ea595513e6f47 (diff) | |
| download | postgresql-44878506d811dcb5e7f4ea6450c9e6b8544f2651.tar.gz postgresql-44878506d811dcb5e7f4ea6450c9e6b8544f2651.zip | |
First step in fixing selectivity-estimation code. eqsel and
neqsel now behave as per my suggestions in pghackers a few days ago.
selectivity for < > <= >= should work OK for integral types as well, but
still need work for nonintegral types. Since these routines have never
actually executed before :-(, this may result in some significant changes
in the optimizer's choices of execution plans. Let me know if you see
any serious misbehavior.
CAUTION: THESE CHANGES REQUIRE INITDB. pg_statistic table has changed.
Diffstat (limited to 'src/backend/parser/parse_expr.c')
0 files changed, 0 insertions, 0 deletions