diff options
Diffstat (limited to 'src/backend/utils/adt/selfuncs.c')
| -rw-r--r-- | src/backend/utils/adt/selfuncs.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/src/backend/utils/adt/selfuncs.c b/src/backend/utils/adt/selfuncs.c index 12157fb4d9d..0b03f27c39c 100644 --- a/src/backend/utils/adt/selfuncs.c +++ b/src/backend/utils/adt/selfuncs.c @@ -15,7 +15,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.180 2005/06/05 22:32:57 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.181 2005/06/10 22:25:36 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -4221,12 +4221,11 @@ genericcostestimate(PlannerInfo *root, * of partial redundancy (such as "x < 4" from the qual and "x < 5" * from the predicate) will be recognized and handled correctly by * clauselist_selectivity(). This assumption is somewhat fragile, - * since it depends on pred_test() and clauselist_selectivity() having - * similar capabilities, and there are certainly many cases where we - * will end up with a too-low selectivity estimate. This will bias - * the system in favor of using partial indexes where possible, which - * is not necessarily a bad thing. But it'd be nice to do better - * someday. + * since it depends on predicate_implied_by() and clauselist_selectivity() + * having similar capabilities, and there are certainly many cases where + * we will end up with a too-low selectivity estimate. This will bias the + * system in favor of using partial indexes where possible, which is not + * necessarily a bad thing. But it'd be nice to do better someday. * * Note that index->indpred and indexQuals are both in implicit-AND form, * so ANDing them together just takes merging the lists. However, |