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Rename new subroutine, per discussion with Robert Haas.

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This commit is contained in:
Tom Lane
2009-09-19 17:48:09 +00:00
parent f7e508a759
commit 9a98dd49f4
1 changed files with 8 additions and 8 deletions
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14
src/backend/optimizer/path/joinpath.c
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@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/path/joinpath.c,v 1.125 2009/09/18 17:24:51 tgl Exp $ * $PostgreSQL: pgsql/src/backend/optimizer/path/joinpath.c,v 1.126 2009/09/19 17:48:09 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -155,17 +155,17 @@ add_paths_to_joinrel(PlannerInfo *root,
} }
/* /*
* clause_matches_join * clause_sides_match_join
* Determine whether a join clause is of the right form to use in this join. * Determine whether a join clause is of the right form to use in this join.
* *
* We already know that the clause is a binary opclause referencing only the * We already know that the clause is a binary opclause referencing only the
* rels in the current join. The point here is to check whether it has the * rels in the current join. The point here is to check whether it has the
* form "outerrel_expr op innerrel_expr" or "innerrel_expr op outerrel_expr", * form "outerrel_expr op innerrel_expr" or "innerrel_expr op outerrel_expr",
* rather than mixing outer and inner vars on either side. If it is usable, * rather than mixing outer and inner vars on either side. If it matches,
* we set the transient flag outer_is_left to identify which side is which. * we set the transient flag outer_is_left to identify which side is which.
*/ */
static inline bool static inline bool
clause_matches_join(RestrictInfo *rinfo, RelOptInfo *outerrel, clause_sides_match_join(RestrictInfo *rinfo, RelOptInfo *outerrel,
RelOptInfo *innerrel) RelOptInfo *innerrel)
{ {
if (bms_is_subset(rinfo->left_relids, outerrel->relids) && if (bms_is_subset(rinfo->left_relids, outerrel->relids) &&
@ -267,7 +267,7 @@ join_is_removable(PlannerInfo *root,
/* /*
* Check if clause has the form "outer op inner" or "inner op outer". * Check if clause has the form "outer op inner" or "inner op outer".
*/ */
if (!clause_matches_join(restrictinfo, outerrel, innerrel)) if (!clause_sides_match_join(restrictinfo, outerrel, innerrel))
continue; /* no good for these input relations */ continue; /* no good for these input relations */
/* OK, add to list */ /* OK, add to list */
@ -1009,7 +1009,7 @@ hash_inner_and_outer(PlannerInfo *root,
/* /*
* Check if clause has the form "outer op inner" or "inner op outer". * Check if clause has the form "outer op inner" or "inner op outer".
*/ */
if (!clause_matches_join(restrictinfo, outerrel, innerrel)) if (!clause_sides_match_join(restrictinfo, outerrel, innerrel))
continue; /* no good for these input relations */ continue; /* no good for these input relations */
hashclauses = lappend(hashclauses, restrictinfo); hashclauses = lappend(hashclauses, restrictinfo);
@ -1186,7 +1186,7 @@ select_mergejoin_clauses(PlannerInfo *root,
/* /*
* Check if clause has the form "outer op inner" or "inner op outer". * Check if clause has the form "outer op inner" or "inner op outer".
*/ */
if (!clause_matches_join(restrictinfo, outerrel, innerrel)) if (!clause_sides_match_join(restrictinfo, outerrel, innerrel))
{ {
have_nonmergeable_joinclause = true; have_nonmergeable_joinclause = true;
continue; /* no good for these input relations */ continue; /* no good for these input relations */