diff options
Diffstat (limited to 'src/backend/optimizer/util/clauses.c')
| -rw-r--r-- | src/backend/optimizer/util/clauses.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/src/backend/optimizer/util/clauses.c b/src/backend/optimizer/util/clauses.c index e38fc46821d..233a8cb8947 100644 --- a/src/backend/optimizer/util/clauses.c +++ b/src/backend/optimizer/util/clauses.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/util/clauses.c,v 1.121 2003/01/10 21:08:13 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/util/clauses.c,v 1.122 2003/01/15 19:35:44 tgl Exp $ * * HISTORY * AUTHOR DATE MAJOR EVENT @@ -112,17 +112,13 @@ make_opclause(Oid opno, Oid opresulttype, bool opretset, * * Returns the left operand of a clause of the form (op expr expr) * or (op expr) - * - * NB: for historical reasons, the result is declared Var *, even - * though many callers can cope with results that are not Vars. - * The result really ought to be declared Expr * or Node *. */ -Var * +Node * get_leftop(Expr *clause) { OpExpr *expr = (OpExpr *) clause; - if (expr->args != NULL) + if (expr->args != NIL) return lfirst(expr->args); else return NULL; @@ -134,12 +130,12 @@ get_leftop(Expr *clause) * Returns the right operand in a clause of the form (op expr expr). * NB: result will be NULL if applied to a unary op clause. */ -Var * +Node * get_rightop(Expr *clause) { OpExpr *expr = (OpExpr *) clause; - if (expr->args != NULL && lnext(expr->args) != NULL) + if (expr->args != NIL && lnext(expr->args) != NIL) return lfirst(lnext(expr->args)); else return NULL; |