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Revert "Move PartitionPruneInfo out of plan nodes into PlannedStmt"

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This reverts commit ec38694894 and its fixup 589bb81649.

This change was intended to support query planning avoiding acquisition
of locks on partitions that were going to be pruned; however, the
overall project took a different direction at [1] and this bit is no
longer needed.  Put things back the way they were as agreed in [2], to
avoid unnecessary complexity.

Discussion: [1] https://postgr.es/m/4191508.1674157166@sss.pgh.pa.us
Discussion: [2] https://postgr.es/m/20230502175409.kcoirxczpdha26wt@alvherre.pgsql
This commit is contained in:
Alvaro Herrera
2023-05-04 12:09:59 +02:00
parent 919c486a27
commit 5472743d9e
16 changed files with 63 additions and 135 deletions
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24
src/backend/optimizer/plan/createplan.c
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@@ -1203,6 +1203,7 @@ create_append_plan(PlannerInfo *root, AppendPath *best_path, int flags)
ListCell *subpaths;
int nasyncplans = 0;
RelOptInfo *rel = best_path->path.parent;
PartitionPruneInfo *partpruneinfo = NULL;
int nodenumsortkeys = 0;
AttrNumber *nodeSortColIdx = NULL;
Oid *nodeSortOperators = NULL;
@@ -1353,9 +1354,6 @@ create_append_plan(PlannerInfo *root, AppendPath *best_path, int flags)
subplans = lappend(subplans, subplan);
}
/* Set below if we find quals that we can use to run-time prune */
plan->part_prune_index = -1;
/*
* If any quals exist, they may be useful to perform further partition
* pruning during execution. Gather information needed by the executor to
@@ -1379,14 +1377,16 @@ create_append_plan(PlannerInfo *root, AppendPath *best_path, int flags)
}
if (prunequal != NIL)
plan->part_prune_index = make_partition_pruneinfo(root, rel,
best_path->subpaths,
prunequal);
partpruneinfo =
make_partition_pruneinfo(root, rel,
best_path->subpaths,
prunequal);
}
plan->appendplans = subplans;
plan->nasyncplans = nasyncplans;
plan->first_partial_plan = best_path->first_partial_path;
plan->part_prune_info = partpruneinfo;
copy_generic_path_info(&plan->plan, (Path *) best_path);
@@ -1425,6 +1425,7 @@ create_merge_append_plan(PlannerInfo *root, MergeAppendPath *best_path,
List *subplans = NIL;
ListCell *subpaths;
RelOptInfo *rel = best_path->path.parent;
PartitionPruneInfo *partpruneinfo = NULL;
/*
* We don't have the actual creation of the MergeAppend node split out
@@ -1517,9 +1518,6 @@ create_merge_append_plan(PlannerInfo *root, MergeAppendPath *best_path,
subplans = lappend(subplans, subplan);
}
/* Set below if we find quals that we can use to run-time prune */
node->part_prune_index = -1;
/*
* If any quals exist, they may be useful to perform further partition
* pruning during execution. Gather information needed by the executor to
@@ -1535,13 +1533,13 @@ create_merge_append_plan(PlannerInfo *root, MergeAppendPath *best_path,
Assert(best_path->path.param_info == NULL);
if (prunequal != NIL)
node->part_prune_index = make_partition_pruneinfo(root, rel,
best_path->subpaths,
prunequal);
partpruneinfo = make_partition_pruneinfo(root, rel,
best_path->subpaths,
prunequal);
}
node->mergeplans = subplans;
node->part_prune_info = partpruneinfo;
/*
* If prepare_sort_from_pathkeys added sort columns, but we were told to