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David Rowley 42473b3b31 Have the planner replace COUNT(ANY) with COUNT(*), when possible ... This adds SupportRequestSimplifyAggref to allow pg_proc.prosupport functions to receive an Aggref and allow them to determine if there is a way that the Aggref call can be optimized. Also added is a support function to allow transformation of COUNT(ANY) into COUNT(*). This is possible to do when the given "ANY" cannot be NULL and also that there are no ORDER BY / DISTINCT clauses within the Aggref. This is a useful transformation to do as it is common that people write COUNT(1), which until now has added unneeded overhead. When counting a NOT NULL column. The overheads can be worse as that might mean deforming more of the tuple, which for large fact tables may be many columns in. It may be possible to add prosupport functions for other aggregates. We could consider if ORDER BY could be dropped for some calls, e.g. the ORDER BY is quite useless in MAX(c ORDER BY c). There is a little bit of passing fallout from adjusting expr_is_nonnullable() to handle Const which results in a plan change in the aggregates.out regression test. Previously, nothing was able to determine that "One-Time Filter: (100 IS NOT NULL)" was always true, therefore useless to include in the plan. Author: David Rowley <dgrowleyml@gmail.com> Reviewed-by: Corey Huinker <corey.huinker@gmail.com> Reviewed-by: Matheus Alcantara <matheusssilv97@gmail.com> Discussion: https://postgr.es/m/CAApHDvqGcPTagXpKfH=CrmHBqALpziThJEDs_MrPqjKVeDF9wA@mail.gmail.com		3 weeks ago
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expected	Have the planner replace COUNT(ANY) with COUNT(*), when possible	3 weeks ago
specs	postgres_fdw: Add more test coverage for EvalPlanQual testing.	1 month ago
sql	Support COPY TO for partitioned tables.	2 months ago
t	Fix typos and grammar in the code	8 months ago
.gitignore	Fix EvalPlanQual handling of foreign/custom joins in ExecScanFetch.	2 months ago
Makefile	Fix EvalPlanQual handling of foreign/custom joins in ExecScanFetch.	2 months ago
connection.c	Don't include access/htup_details.h in executor/tuptable.h	2 months ago
deparse.c	Use CompactAttribute more often, when possible	2 months ago
meson.build	Fix EvalPlanQual handling of foreign/custom joins in ExecScanFetch.	2 months ago
option.c	Remove INT64_HEX_FORMAT and UINT64_HEX_FORMAT	4 months ago
postgres_fdw--1.0--1.1.sql	…
postgres_fdw--1.0.sql	…
postgres_fdw--1.1--1.2.sql	postgres_fdw: Extend postgres_fdw_get_connections to return remote backend PID.	10 months ago
postgres_fdw.c	Use stack allocated StringInfoDatas, where possible	1 month ago
postgres_fdw.control	…
postgres_fdw.h	Split up pgfdw_report_error so that we can mark it pg_noreturn.	5 months ago
shippable.c	Update copyright for 2025	12 months ago