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Alexander Korotkov 8c73ab9da9 Further improve commentary about ChangeVarNodesWalkExpression() 
The updated comment explains why we use ChangeVarNodes_walker() instead of
expression_tree_walker(), and provides a bit more detail about the differences
in processing top-level Query and subqueries.

Author: Alexander Korotkov <aekorotkov@gmail.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/CAPpHfdvbjq342WTQ705Wmqhe8794pcp7wospz%2BWUJ2qB7vuOqA%40mail.gmail.com
Backpatch-through: 18
2026-03-24 09:53:28 +02:00
..
backend Further improve commentary about ChangeVarNodesWalkExpression() 2026-03-24 09:53:28 +02:00
bin Prevent restore of incremental backup from bloating VM fork. 2026-03-09 06:46:20 -04:00
common Fix some cases of indirectly casting away const. 2026-02-25 11:19:50 -05:00
fe_utils Fix finalization of decompressor astreamers. 2026-03-22 18:06:48 -04:00
include Fix multixact backwards-compatibility with CHECKPOINT race condition 2026-03-23 11:53:32 +02:00
interfaces Fix some cases of indirectly casting away const. 2026-02-25 11:19:50 -05:00
makefiles pgxs.mk: remove unreachable rule for deleting regress.def. 2025-06-20 12:12:29 -04:00
pl EUC_CN, EUC_JP, EUC_KR, EUC_TW: Skip U+00A0 tests instead of failing. 2026-02-25 18:13:25 -08:00
port Fix some cases of indirectly casting away const. 2026-02-25 11:19:50 -05:00
template thread-safety: gmtime_r(), localtime_r() 2024-08-23 07:43:04 +02:00
test Fix self-join removal to update bare Var references in join clauses 2026-03-20 15:47:11 +02:00
timezone Fix some cases of indirectly casting away const. 2026-02-25 11:19:50 -05:00
tools Harden _int_matchsel() against being attached to the wrong operator. 2026-02-09 10:14:22 -05:00
tutorial Doc: simplify the tutorial's window-function examples. 2025-01-21 14:43:21 -05:00
.gitignore
DEVELOPERS
Makefile Remove distprep 2023-11-06 15:18:04 +01:00
Makefile.global.in Don't put library-supplied -L/-I switches before user-supplied ones. 2025-07-29 15:17:40 -04:00
Makefile.shlib Use exported symbols list on macOS for loadable modules as well 2025-06-10 07:04:43 +02:00
meson.build Update copyright for 2025 2025-01-01 11:21:55 -05:00
nls-global.mk Fix update-po for the PGXS case 2025-10-16 20:21:05 +02:00