diff options
Diffstat (limited to 'src/backend/optimizer/path/allpaths.c')
| -rw-r--r-- | src/backend/optimizer/path/allpaths.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c index 486dede0fb9..494f624d4cd 100644 --- a/src/backend/optimizer/path/allpaths.c +++ b/src/backend/optimizer/path/allpaths.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.104 2003/07/25 00:01:06 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.105 2003/08/04 00:43:20 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -50,13 +50,13 @@ static void set_function_pathlist(Query *root, RelOptInfo *rel, 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, - bool *differentTypes); + bool *differentTypes); static bool recurse_pushdown_safe(Node *setOp, Query *topquery, - bool *differentTypes); + bool *differentTypes); static void compare_tlist_datatypes(List *tlist, List *colTypes, - bool *differentTypes); + bool *differentTypes); static bool qual_is_pushdown_safe(Query *subquery, Index rti, Node *qual, - bool *differentTypes); + bool *differentTypes); static void subquery_push_qual(Query *subquery, Index rti, Node *qual); static void recurse_push_qual(Node *setOp, Query *topquery, Index rti, Node *qual); @@ -290,14 +290,14 @@ set_inherited_rel_pathlist(Query *root, RelOptInfo *rel, rel->rows += childrel->rows; if (childrel->width > rel->width) rel->width = childrel->width; - + childvars = FastListValue(&childrel->reltargetlist); foreach(parentvars, FastListValue(&rel->reltargetlist)) { - Var *parentvar = (Var *) lfirst(parentvars); - Var *childvar = (Var *) lfirst(childvars); - int parentndx = parentvar->varattno - rel->min_attr; - int childndx = childvar->varattno - childrel->min_attr; + Var *parentvar = (Var *) lfirst(parentvars); + Var *childvar = (Var *) lfirst(childvars); + int parentndx = parentvar->varattno - rel->min_attr; + int childndx = childvar->varattno - childrel->min_attr; if (childrel->attr_widths[childndx] > rel->attr_widths[parentndx]) rel->attr_widths[parentndx] = childrel->attr_widths[childndx]; @@ -343,8 +343,8 @@ 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(). Restrictions on individual clauses are - * checked by qual_is_pushdown_safe(). + * subquery_is_pushdown_safe(). Restrictions on individual clauses + * are checked by qual_is_pushdown_safe(). * * Non-pushed-down clauses will get evaluated as qpquals of the * SubqueryScan node. @@ -725,15 +725,16 @@ qual_is_pushdown_safe(Query *subquery, Index rti, Node *qual, vars = pull_var_clause(qual, false); foreach(vl, vars) { - Var *var = (Var *) lfirst(vl); + Var *var = (Var *) lfirst(vl); List *tl; TargetEntry *tle = NULL; Assert(var->varno == rti); + /* * We use a bitmapset to avoid testing the same attno more than - * once. (NB: this only works because subquery outputs can't - * have negative attnos.) + * once. (NB: this only works because subquery outputs can't have + * negative attnos.) */ if (bms_is_member(var->varattno, tested)) continue; |