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Executor no longer cares about mergejoinop, mergerightorder, mergeleftorder,

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so remove them from MergeJoin node.  Hack together a partial
solution for commuted mergejoin operators --- yesterday
a mergejoin int4 = int8 would crash if the planner decided to
commute it, today it works.  The planner's representation of
mergejoins really needs a rewrite though.
Also, further testing of mergejoin ops in opr_sanity regress test.
This commit is contained in:
Tom Lane
1999-03-01 00:10:44 +00:00
parent d077c61492
commit b204d10c79
10 changed files with 156 additions and 95 deletions
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11
src/backend/optimizer/util/clauses.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/clauses.c,v 1.31 1999/02/18 00:49:37 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/clauses.c,v 1.32 1999/03/01 00:10:35 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -780,24 +780,25 @@ CommuteClause(Node *clause)
HeapTuple heapTup;
if (!is_opclause(clause))
return;
elog(ERROR, "CommuteClause: applied to non-operator clause");
heapTup = (HeapTuple)
get_operator_tuple(get_commutator(((Oper *) ((Expr *) clause)->oper)->opno));
if (heapTup == (HeapTuple) NULL)
return;
elog(ERROR, "CommuteClause: no commutator for operator %d",
((Oper *) ((Expr *) clause)->oper)->opno);
commuTup = (Form_pg_operator) GETSTRUCT(heapTup);
commu = makeOper(heapTup->t_data->t_oid,
InvalidOid,
commuTup->oprcode,
commuTup->oprresult,
((Oper *) ((Expr *) clause)->oper)->opsize,
NULL);
/*
* reform the clause -> (operator func/var constant)
* re-form the clause in-place!
*/
((Expr *) clause)->oper = (Node *) commu;
temp = lfirst(((Expr *) clause)->args);