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Remove the stub support we had for UNION JOIN; per discussion, this is

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not likely ever to be implemented seeing it's been removed from SQL2003.
This allows getting rid of the 'filter' version of yylex() that we had in
parser.c, which should save at least a few microseconds in parsing.
This commit is contained in:
Tom Lane
2006-03-07 01:00:19 +00:00
parent 48cf295742
commit 012abebab1
14 changed files with 20 additions and 158 deletions
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4
src/backend/optimizer/path/clausesel.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/path/clausesel.c,v 1.78 2006/03/05 15:58:28 momjian Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/path/clausesel.c,v 1.79 2006/03/07 01:00:15 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -449,8 +449,6 @@ clause_selectivity(PlannerInfo *root,
cacheable = true;
break;
case JOIN_UNION:
/* unimplemented anyway... */
case JOIN_IN:
case JOIN_REVERSE_IN:
case JOIN_UNIQUE_OUTER:

14
src/backend/optimizer/plan/initsplan.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/plan/initsplan.c,v 1.115 2006/03/05 15:58:29 momjian Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/plan/initsplan.c,v 1.116 2006/03/07 01:00:15 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -363,18 +363,6 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
*qualscope = bms_union(leftids, rightids);
nonnullable_rels = leftids;
break;
case JOIN_UNION:
/*
* This is where we fail if upper levels of planner haven't
* rewritten UNION JOIN as an Append ...
*/
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("UNION JOIN is not implemented")));
nonnullable_rels = NULL; /* keep compiler quiet */
leftjoinlist = rightjoinlist = NIL;
break;
default:
elog(ERROR, "unrecognized join type: %d",
(int) j->jointype);

12
src/backend/optimizer/prep/prepjointree.c
View File

@@ -15,7 +15,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/prep/prepjointree.c,v 1.36 2006/03/05 15:58:30 momjian Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/prep/prepjointree.c,v 1.37 2006/03/07 01:00:15 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -242,16 +242,6 @@ pull_up_subqueries(PlannerInfo *root, Node *jtnode,
j->rarg = pull_up_subqueries(root, j->rarg,
below_outer_join, false);
break;
case JOIN_UNION:
/*
* This is where we fail if upper levels of planner haven't
* rewritten UNION JOIN as an Append ...
*/
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("UNION JOIN is not implemented")));
break;
default:
elog(ERROR, "unrecognized join type: %d",
(int) j->jointype);