diff options
Diffstat (limited to 'src/backend/optimizer/path/clausesel.c')
| -rw-r--r-- | src/backend/optimizer/path/clausesel.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/src/backend/optimizer/path/clausesel.c b/src/backend/optimizer/path/clausesel.c index ba2e7e67b3..7d80e28819 100644 --- a/src/backend/optimizer/path/clausesel.c +++ b/src/backend/optimizer/path/clausesel.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/path/clausesel.c,v 1.38 2000/06/08 22:37:09 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/path/clausesel.c,v 1.39 2000/08/13 02:50:04 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -123,7 +123,7 @@ clauselist_selectivity(Query *root, Selectivity s2; /* - * See if it looks like a restriction clause with a Const or Param + * See if it looks like a restriction clause with a pseudoconstant * on one side. (Anything more complicated than that might not * behave in the simple way we are expecting.) * @@ -146,7 +146,7 @@ clauselist_selectivity(Query *root, other = (flag & SEL_RIGHT) ? get_rightop((Expr *) clause) : get_leftop((Expr *) clause); - if (IsA(other, Const) || IsA(other, Param)) + if (is_pseudo_constant_clause((Node *) other)) { Oid opno = ((Oper *) ((Expr *) clause)->oper)->opno; RegProcedure oprrest = get_oprrest(opno); @@ -533,6 +533,13 @@ clause_selectivity(Query *root, */ s1 = 1.0; } + else if (IsA(clause, RelabelType)) + { + /* Not sure this case is needed, but it can't hurt */ + s1 = clause_selectivity(root, + ((RelabelType *) clause)->arg, + varRelid); + } return s1; } |