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Fix a number of places that made faulty assumptions about

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what is_opclause will accept.
This commit is contained in:
Tom Lane
1999-02-15 01:06:59 +00:00
parent 5500039843
commit dec354ca97
6 changed files with 127 additions and 56 deletions
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54
src/backend/optimizer/plan/initsplan.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/initsplan.c,v 1.24 1999/02/14 04:56:50 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/initsplan.c,v 1.25 1999/02/15 01:06:58 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -367,13 +367,30 @@ set_joininfo_mergeable_hashable(List *rel_list)
static MergeOrder *
mergejoinop(Expr *clause)
{
Oid leftOp,
Var *left,
*right;
Oid opno,
leftOp,
rightOp;
bool sortable;
sortable = op_mergejoinable(((Oper *) clause->oper)->opno,
(get_leftop(clause))->vartype,
(get_rightop(clause))->vartype,
if (!is_opclause((Node*) clause))
return NULL;
left = get_leftop(clause);
right = get_rightop(clause);
/* caution: is_opclause accepts more than I do, so check it */
if (!right)
return NULL; /* unary opclauses need not apply */
if (!IsA(left, Var) || !IsA(right, Var))
return NULL;
opno = ((Oper *) clause->oper)->opno;
sortable = op_mergejoinable(opno,
left->vartype,
right->vartype,
&leftOp,
&rightOp);
@@ -381,11 +398,11 @@ mergejoinop(Expr *clause)
{
MergeOrder *morder = makeNode(MergeOrder);
morder->join_operator = ((Oper *) clause->oper)->opno;
morder->join_operator = opno;
morder->left_operator = leftOp;
morder->right_operator = rightOp;
morder->left_type = (get_leftop(clause))->vartype;
morder->right_type = (get_rightop(clause))->vartype;
morder->left_type = left->vartype;
morder->right_type = right->vartype;
return morder;
}
else
@@ -401,7 +418,22 @@ mergejoinop(Expr *clause)
static Oid
hashjoinop(Expr *clause)
{
return (op_hashjoinable(((Oper *) clause->oper)->opno,
(get_leftop(clause))->vartype,
(get_rightop(clause))->vartype));
Var *left,
*right;
if (!is_opclause((Node*) clause))
return InvalidOid;
left = get_leftop(clause);
right = get_rightop(clause);
/* caution: is_opclause accepts more than I do, so check it */
if (!right)
return InvalidOid; /* unary opclauses need not apply */
if (!IsA(left, Var) || !IsA(right, Var))
return InvalidOid;
return op_hashjoinable(((Oper *) clause->oper)->opno,
left->vartype,
right->vartype);
}