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Change NestPath node to contain JoinPath node

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This makes the structure of all JoinPath-derived nodes the same,
independent of whether they have additional fields.

Discussion: https://www.postgresql.org/message-id/flat/c1097590-a6a4-486a-64b1-e1f9cc0533ce@enterprisedb.com
This commit is contained in:
Peter Eisentraut
2021-08-08 16:55:51 +02:00
parent 2226b4189b
commit 18fea737b5
4 changed files with 51 additions and 45 deletions
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32
src/backend/optimizer/util/pathnode.c
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@@ -2443,10 +2443,10 @@ create_nestloop_path(PlannerInfo *root,
restrict_clauses = jclauses;
}
pathnode->path.pathtype = T_NestLoop;
pathnode->path.parent = joinrel;
pathnode->path.pathtarget = joinrel->reltarget;
pathnode->path.param_info =
pathnode->jpath.path.pathtype = T_NestLoop;
pathnode->jpath.path.parent = joinrel;
pathnode->jpath.path.pathtarget = joinrel->reltarget;
pathnode->jpath.path.param_info =
get_joinrel_parampathinfo(root,
joinrel,
outer_path,
@@ -2454,17 +2454,17 @@ create_nestloop_path(PlannerInfo *root,
extra->sjinfo,
required_outer,
&restrict_clauses);
pathnode->path.parallel_aware = false;
pathnode->path.parallel_safe = joinrel->consider_parallel &&
pathnode->jpath.path.parallel_aware = false;
pathnode->jpath.path.parallel_safe = joinrel->consider_parallel &&
outer_path->parallel_safe && inner_path->parallel_safe;
/* This is a foolish way to estimate parallel_workers, but for now... */
pathnode->path.parallel_workers = outer_path->parallel_workers;
pathnode->path.pathkeys = pathkeys;
pathnode->jointype = jointype;
pathnode->inner_unique = extra->inner_unique;
pathnode->outerjoinpath = outer_path;
pathnode->innerjoinpath = inner_path;
pathnode->joinrestrictinfo = restrict_clauses;
pathnode->jpath.path.parallel_workers = outer_path->parallel_workers;
pathnode->jpath.path.pathkeys = pathkeys;
pathnode->jpath.jointype = jointype;
pathnode->jpath.inner_unique = extra->inner_unique;
pathnode->jpath.outerjoinpath = outer_path;
pathnode->jpath.innerjoinpath = inner_path;
pathnode->jpath.joinrestrictinfo = restrict_clauses;
final_cost_nestloop(root, pathnode, workspace, extra);
@@ -4110,13 +4110,15 @@ do { \
case T_NestPath:
{
JoinPath *jpath;
NestPath *npath;
FLAT_COPY_PATH(jpath, path, NestPath);
FLAT_COPY_PATH(npath, path, NestPath);
jpath = (JoinPath *) npath;
REPARAMETERIZE_CHILD_PATH(jpath->outerjoinpath);
REPARAMETERIZE_CHILD_PATH(jpath->innerjoinpath);
ADJUST_CHILD_ATTRS(jpath->joinrestrictinfo);
new_path = (Path *) jpath;
new_path = (Path *) npath;
}
break;