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Richard Guo 1f4f87d794 Remove redundant restriction checks in apply_child_basequals 
In apply_child_basequals, after translating a parent relation's
restriction quals for a child relation, we simplify each child qual by
calling eval_const_expressions.  Historically, the code then called
restriction_is_always_false and restriction_is_always_true to reduce
NullTest quals that are provably false or true.

However, since commit e2debb643, the planner natively performs
NullTest deduction during constant folding.  Therefore, calling
restriction_is_always_false and restriction_is_always_true immediately
afterward is redundant and wastes CPU cycles.  We can safely remove
them and simply rely on the constant folding to handle the deduction.

Author: Richard Guo <guofenglinux@gmail.com>
Discussion: https://postgr.es/m/CAMbWs4-vLmGXaUEZyOMacN0BVfqWCt2tM-eDVWdDfJnOQaauGg@mail.gmail.com
2026-03-04 10:57:43 +09:00
..
backend Remove redundant restriction checks in apply_child_basequals 2026-03-04 10:57:43 +09:00
bin Add COPY (on_error set_null) option 2026-03-03 07:37:12 +01:00
common Fix some -Wcast-qual warnings 2026-02-27 21:57:33 +01:00
fe_utils Fix some -Wcast-qual warnings 2026-02-27 21:57:33 +01:00
include Add read_stream_{pause,resume}() 2026-03-03 16:03:09 -05:00
interfaces Fix some -Wcast-qual warnings 2026-02-27 21:57:33 +01:00
makefiles Restore AIX support. 2026-02-23 13:34:22 -05:00
pl EUC_CN, EUC_JP, EUC_KR, EUC_TW: Skip U+00A0 tests instead of failing. 2026-02-25 18:13:22 -08:00
port Check for memset_explicit() and explicit_memset() 2026-03-02 07:51:19 +01:00
template Restore AIX support. 2026-02-23 13:34:22 -05:00
test Add some tests for CREATE OR REPLACE VIEW with column additions 2026-03-04 09:55:58 +09:00
timezone Use fallthrough attribute instead of comment 2026-02-19 08:51:12 +01:00
tools Centralize detection of x86 CPU features 2026-02-27 20:30:41 +07:00
tutorial Force standard_conforming_strings to always be ON. 2026-01-21 15:08:38 -05:00
.gitignore
DEVELOPERS
Makefile Remove distprep 2023-11-06 15:18:04 +01:00
Makefile.global.in tests: Add a test C++ extension module 2026-01-20 16:42:30 +01:00
Makefile.shlib Restore AIX support. 2026-02-23 13:34:22 -05:00
meson.build Update copyright for 2026 2026-01-01 13:24:10 -05:00
nls-global.mk Fix update-po for the PGXS case 2025-10-16 20:21:05 +02:00