Jeff Davis 27bdec0684 Optimization for lower(), upper(), casefold() functions. ... Improve performance and reduce table sizes for case mapping. The main case mapping table stores only 16-bit offsets, which can be used to look up the mapped code point in any of the case tables (fold, lower, upper, or title case). Simple case pairs point to the same offsets. Generate a function in generate-unicode_case_table.pl that consists of a nested branches to test for specific codepoint ranges that determine the offset in the main table. Other approaches were considered, such as representing these ranges as another structure (rather than branches in a generated function), or a different approach such as a radix tree, or perfect hashing. The author implemented and tested these alternatives and settled on the generated branches. Author: Alexander Borisov <lex.borisov@gmail.com> Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi> Discussion: https://postgr.es/m/7cac7e66-9a3b-4e3f-a997-42aa0c401f80%40gmail.com		2025-03-15 13:00:50 -07:00
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unicode	Optimization for lower(), upper(), casefold() functions.	2025-03-15 13:00:50 -07:00
.gitignore	Replace the data structure used for keyword lookup.	2019-01-06 17:02:57 -05:00
archive.c	Update copyright for 2025	2025-01-01 11:21:55 -05:00
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controldata_utils.c	Remove various unnecessary (char *) casts	2025-02-20 19:49:27 +01:00
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digit_table.h	Change floating-point output format for improved performance.	2019-02-13 15:20:33 +00:00
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jsonapi.c	Be clearer about when jsonapi's need_escapes is needed	2025-01-19 09:09:58 -05:00
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Makefile	common/jsonapi: support libpq as a client	2024-09-11 09:01:07 +02:00
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parse_manifest.c	pg_noreturn to replace pg_attribute_noreturn()	2025-03-13 12:37:26 +01:00
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relpath.c	Change relpath() et al to return path by value	2025-02-25 09:02:07 -05:00
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stringinfo.c	Fix a compiler warning in initStringInfo().	2025-01-11 15:52:37 +09:00
unicode_case.c	Optimization for lower(), upper(), casefold() functions.	2025-03-15 13:00:50 -07:00
unicode_category.c	Update copyright for 2025	2025-01-01 11:21:55 -05:00
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wchar.c	Add pg_encoding_set_invalid()	2025-02-10 10:03:37 -05:00