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pgindent run.

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This commit is contained in:
Bruce Momjian
2002-09-04 20:31:48 +00:00
parent c91ceec21d
commit e50f52a074
446 changed files with 14942 additions and 13363 deletions
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36
src/backend/optimizer/path/allpaths.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.87 2002/08/29 16:03:48 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.88 2002/09/04 20:31:20 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -43,14 +43,14 @@ static void set_inherited_rel_pathlist(Query *root, RelOptInfo *rel,
static void set_subquery_pathlist(Query *root, RelOptInfo *rel,
Index rti, RangeTblEntry *rte);
static void set_function_pathlist(Query *root, RelOptInfo *rel,
RangeTblEntry *rte);
RangeTblEntry *rte);
static RelOptInfo *make_one_rel_by_joins(Query *root, int levels_needed,
List *initial_rels);
static bool subquery_is_pushdown_safe(Query *subquery, Query *topquery);
static bool recurse_pushdown_safe(Node *setOp, Query *topquery);
static void subquery_push_qual(Query *subquery, Index rti, Node *qual);
static void recurse_push_qual(Node *setOp, Query *topquery,
Index rti, Node *qual);
Index rti, Node *qual);
/*
@ -304,9 +304,10 @@ set_subquery_pathlist(Query *root, RelOptInfo *rel,
*
* There are several cases where we cannot push down clauses.
* Restrictions involving the subquery are checked by
* subquery_is_pushdown_safe(). Also, we do not push down clauses that
* contain subselects, mainly because I'm not sure it will work correctly
* (the subplan hasn't yet transformed sublinks to subselects).
* subquery_is_pushdown_safe(). Also, we do not push down clauses
* that contain subselects, mainly because I'm not sure it will work
* correctly (the subplan hasn't yet transformed sublinks to
* subselects).
*
* Non-pushed-down clauses will get evaluated as qpquals of the
* SubqueryScan node.
@ -542,7 +543,7 @@ make_one_rel_by_joins(Query *root, int levels_needed, List *initial_rels)
* quals into it, because that would change the results. For subqueries
* using UNION/UNION ALL/INTERSECT/INTERSECT ALL, we can push the quals
* into each component query, so long as all the component queries share
* identical output types. (That restriction could probably be relaxed,
* identical output types. (That restriction could probably be relaxed,
* but it would take much more code to include type coercion code into
* the quals, and I'm also concerned about possible semantic gotchas.)
*/
@ -633,14 +634,14 @@ subquery_push_qual(Query *subquery, Index rti, Node *qual)
else
{
/*
* We need to replace Vars in the qual (which must refer
* to outputs of the subquery) with copies of the
* subquery's targetlist expressions. Note that at this
* point, any uplevel Vars in the qual should have been
* replaced with Params, so they need no work.
* We need to replace Vars in the qual (which must refer to
* outputs of the subquery) with copies of the subquery's
* targetlist expressions. Note that at this point, any uplevel
* Vars in the qual should have been replaced with Params, so they
* need no work.
*
* This step also ensures that when we are pushing into a setop
* tree, each component query gets its own copy of the qual.
* This step also ensures that when we are pushing into a setop tree,
* each component query gets its own copy of the qual.
*/
qual = ResolveNew(qual, rti, 0,
subquery->targetList,
@ -649,10 +650,9 @@ subquery_push_qual(Query *subquery, Index rti, Node *qual)
qual);
/*
* We need not change the subquery's hasAggs or
* hasSublinks flags, since we can't be pushing down any
* aggregates that weren't there before, and we don't push
* down subselects at all.
* We need not change the subquery's hasAggs or hasSublinks flags,
* since we can't be pushing down any aggregates that weren't
* there before, and we don't push down subselects at all.
*/
}
}