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Code Activity

Move PartitioPruneInfo out of plan nodes into PlannedStmt

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The planner will now add a given PartitioPruneInfo to
PlannedStmt.partPruneInfos instead of directly to the
Append/MergeAppend plan node.  What gets set instead in the
latter is an index field which points to the list element
of PlannedStmt.partPruneInfos containing the PartitioPruneInfo
belonging to the plan node.

A later commit will make AcquireExecutorLocks() do the initial
partition pruning to determine a minimal set of partitions to be
locked when validating a plan tree and it will need to consult the
PartitioPruneInfos referenced therein to do so.  It would be better
for the PartitioPruneInfos to be accessible directly than requiring
a walk of the plan tree to find them, which is easier when it can be
done by simply iterating over PlannedStmt.partPruneInfos.

Author: Amit Langote <amitlangote09@gmail.com>
Discussion: https://postgr.es/m/CA+HiwqFGkMSge6TgC9KQzde0ohpAycLQuV7ooitEEpbKB0O_mg@mail.gmail.com
This commit is contained in:
Alvaro Herrera
2022-12-01 12:56:21 +01:00
parent de867c9c53
commit ec38694894
16 changed files with 114 additions and 63 deletions
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1
src/backend/executor/execMain.c
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@ -825,6 +825,7 @@ InitPlan(QueryDesc *queryDesc, int eflags)
ExecInitRangeTable(estate, rangeTable);
estate->es_plannedstmt = plannedstmt;
estate->es_part_prune_infos = plannedstmt->partPruneInfos;
/*
* Next, build the ExecRowMark array from the PlanRowMark(s), if any.