Allow an aggregate's planner support function to be set via CREATE AGGREGATE.

Micro-optimize appendStringInfo[VA].

Replace formatting.c's fixed-size output buffers with StringInfos.

Restructure formatting.c's NUM_processor() to add some const-sanity.

Convert DCH_to_char() to use a StringInfo as destination.

Remove redundant SvOK() tests in plperl.

Support tied Perl objects in plperl and associated contrib modules.

Make plperl's handling of Perl hashes more consistent.

Defend against null "SV *" pointers in plperl modules.

Make plperl's handling of Perl arrays safer and more consistent.

Doc: clean up documentation about text search datatype limits.

Tighten up tsqueryrecv().

Rewrite tsqueryout() to use StringInfo to build the output string.

psql: count every COPY FROM STDIN when scanning a query string.

Consistently enforce tsvector/tsquery maximum lengths.

Fix unsafe order of operations in ResourceOwnerReleaseAll().

Tweak allocation rule for tzload()'s "union local_storage" variable.

Fix MSVC warnings from new timezone code

Sync our copy of the timezone library with IANA release tzcode2026b.

Further improve commentary about ChangeVarNodesWalkExpression()

Improve commentary about ChangeVarNodesWalkExpression().

Fix self-join removal to update bare Var references in join clauses

Deparse FOR PORTION OF using the range column's current name.

Fix deparsing of JSON_ARRAY(subquery) with a FORMAT clause

Test what BEFORE UPDATE triggers do to FOR PORTION OF

Make ExecForPortionOfLeftovers() obey SRF protocol.

Add isolation tests for UPDATE/DELETE FOR PORTION OF

Add UPDATE/DELETE FOR PORTION OF

Record range constructor functions in pg_range

Skip unnecessary get_relids_in_jointree() when there are no PHVs

Fix edge case in remove_useless_result_rtes() with outer joins.

In transformIndexStmt, transform index expressions in INCLUDING.

Update GROUP BY ALL comments about window functions

Add GROUP BY ALL.

Refactor to avoid code duplication in transformPLAssignStmt.

Fix missed copying of groupDistinct in transformPLAssignStmt.

Fix LIKE/regex optimization for indexscan with exact-match pattern.

Revert "Don't lock partitions pruned by initial pruning"

Fix bug in cbc127917 to handle nested Append correctly

Remove unstable test suite added by 525392d57

Don't lock partitions pruned by initial pruning

Fix an oversight in cbc127917 to handle MERGE correctly

Fix mishandling of leading '\' in nondeterministic LIKE.