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David Rowley 29f45e299e Use a hash table to speed up NOT IN(values) ... Similar to 50e17ad28, which allowed hash tables to be used for IN clauses with a set of constants, here we add the same feature for NOT IN clauses. NOT IN evaluates the same as: WHERE a <> v1 AND a <> v2 AND a <> v3. Obviously, if we're using a hash table we must be exactly equivalent to that and return the same result taking into account that either side of the condition could contain a NULL. This requires a little bit of special handling to make work with the hash table version. When processing NOT IN, the ScalarArrayOpExpr's operator will be the <> operator. To be able to build and lookup a hash table we must use the <>'s negator operator. The planner checks if that exists and is hashable and sets the relevant fields in ScalarArrayOpExpr to instruct the executor to use hashing. Author: David Rowley, James Coleman Reviewed-by: James Coleman, Zhihong Yu Discussion: https://postgr.es/m/CAApHDvoF1mum_FRk6D621edcB6KSHBi2+GAgWmioj5AhOu2vwQ@mail.gmail.com		4 years ago
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backend	Use a hash table to speed up NOT IN(values)	4 years ago
bin	Simplify error handing of jsonapi.c for the frontend	4 years ago
common	Simplify error handing of jsonapi.c for the frontend	4 years ago
fe_utils	Fix incautious handling of possibly-miscoded strings in client code.	4 years ago
include	Use a hash table to speed up NOT IN(values)	4 years ago
interfaces	Refactor SASL code with a generic interface for its mechanisms	4 years ago
makefiles	Add NO_INSTALL option to pgxs	4 years ago
pl	Restore the portal-level snapshot for simple expressions, too.	4 years ago
port	Fix error handling in replacement pthread_barrier_init().	4 years ago
template	Further tweaking of PG_SYSROOT heuristics for macOS.	5 years ago
test	Use a hash table to speed up NOT IN(values)	4 years ago
timezone	Update time zone data files to tzdata release 2021a.	5 years ago
tools	Refactor SASL code with a generic interface for its mechanisms	4 years ago
tutorial	doc: Prefer explicit JOIN syntax over old implicit syntax in tutorial	4 years ago
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Makefile	Remove the option to build thread_test.c outside configure.	5 years ago
Makefile.global.in	Fix prove_installcheck to use correct paths when used with PGXS	4 years ago
Makefile.shlib	…
nls-global.mk	Add errhint_plural() function and make use of it	5 years ago