diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 1999-09-09 02:36:04 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 1999-09-09 02:36:04 +0000 |
| commit | 51db6455eac8aa5b0078cefffed51a6257ccbe1d (patch) | |
| tree | b32ee35da610ebae0397bec58e0ad57143a21517 /src/backend/optimizer/util/plancat.c | |
| parent | 45500964f61b0ec671b84b1fdb988bad78f35473 (diff) | |
Repair error noticed by Roberto Cornacchia: selectivity code
was rejecting negative attnums as bogus, which of course they are not.
Add code to get_attdisbursion to produce a useful value for OID attribute,
since VACUUM does not store stats for system attributes.
Also, repair bug that's been in eqjoinsel for a long time: it was taking
the max of the two columns' disbursions, whereas it should use the min.
Diffstat (limited to 'src/backend/optimizer/util/plancat.c')
| -rw-r--r-- | src/backend/optimizer/util/plancat.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c index a428e027f61..9ca188bce62 100644 --- a/src/backend/optimizer/util/plancat.c +++ b/src/backend/optimizer/util/plancat.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/util/plancat.c,v 1.36 1999/07/25 23:07:26 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/util/plancat.c,v 1.37 1999/09/09 02:35:53 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -288,7 +288,7 @@ index_selectivity(Query *root, } /* - * restriction_selectivity in lisp system. + * restriction_selectivity * * NOTE: The routine is now merged with RestrictionClauseSelectivity * as defined in plancat.c @@ -298,7 +298,7 @@ index_selectivity(Query *root, * operator relation, by calling the function manager. * * XXX The assumption in the selectivity procedures is that if the - * relation OIDs or attribute numbers are -1, then the clause + * relation OIDs or attribute numbers are 0, then the clause * isn't of the form (op var const). */ Cost @@ -337,7 +337,7 @@ restriction_selectivity(Oid functionObjectId, * information. * * XXX The assumption in the selectivity procedures is that if the - * relation OIDs or attribute numbers are -1, then the clause + * relation OIDs or attribute numbers are 0, then the clause * isn't of the form (op var var). */ Cost |