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Tom Lane 9221f9d485 Make contrib/btree_gist's GiST penalty function a bit saner. ... The previous coding supposed that the first differing bytes in two varlena datums must have the same sign difference as their overall comparison result. This is obviously bogus for text strings in non-C locales, and probably wrong for numeric, and even for bytea I think it was wrong on machines where char is signed. When the assumption failed, the function could deliver a zero or negative penalty in situations where such a result is quite ridiculous, leading the core GiST code to make very bad page-split decisions. To fix, take the absolute values of the byte-level differences. Also, switch the code to using unsigned char not just char, so that the behavior will be consistent whether char is signed or not. Per investigation of a trouble report from Tomas Vondra. Back-patch to all supported branches.		13 years ago
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data	Add missing newlines at end of files	15 years ago
expected	Reduce messages about implicit indexes and sequences to DEBUG1.	13 years ago
sql	Add KNNGIST support to contrib/btree_gist.	15 years ago
.gitignore	Support "make check" in contrib	14 years ago
Makefile	Add -lm to SHLIB_LINK for contrib/btree_gist.	15 years ago
btree_bit.c	Add postgres.h to *.c files for pg_upgrade, ltree, and btree_gist, and	14 years ago
btree_bytea.c	Add postgres.h to *.c files for pg_upgrade, ltree, and btree_gist, and	14 years ago
btree_cash.c	Remove many -Wcast-qual warnings	14 years ago
btree_date.c	Remove many -Wcast-qual warnings	14 years ago
btree_float4.c	Remove many -Wcast-qual warnings	14 years ago
btree_float8.c	Remove many -Wcast-qual warnings	14 years ago
btree_gist--1.0.sql	Throw a useful error message if an extension script file is fed to psql.	14 years ago
btree_gist--unpackaged--1.0.sql	Throw a useful error message if an extension script file is fed to psql.	14 years ago
btree_gist.c	Add postgres.h to *.c files for pg_upgrade, ltree, and btree_gist, and	14 years ago
btree_gist.control	Convert contrib modules to use the extension facility.	15 years ago
btree_gist.h	Remove unnecessary #include references, per pgrminclude script.	14 years ago
btree_inet.c	Remove many -Wcast-qual warnings	14 years ago
btree_int2.c	Replace int2/int4 in C code with int16/int32	13 years ago
btree_int4.c	Replace int2/int4 in C code with int16/int32	13 years ago
btree_int8.c	Remove many -Wcast-qual warnings	14 years ago
btree_interval.c	Remove many -Wcast-qual warnings	14 years ago
btree_macaddr.c	Remove many -Wcast-qual warnings	14 years ago
btree_numeric.c	Add postgres.h to *.c files for pg_upgrade, ltree, and btree_gist, and	14 years ago
btree_oid.c	Remove many -Wcast-qual warnings	14 years ago
btree_text.c	Add postgres.h to *.c files for pg_upgrade, ltree, and btree_gist, and	14 years ago
btree_time.c	Remove many -Wcast-qual warnings	14 years ago
btree_ts.c	Remove many -Wcast-qual warnings	14 years ago
btree_utils_num.c	Move Timestamp/Interval typedefs and basic macros into datatype/timestamp.h.	14 years ago
btree_utils_num.h	Remove unnecessary #include references, per pgrminclude script.	14 years ago
btree_utils_var.c	Make contrib/btree_gist's GiST penalty function a bit saner.	13 years ago
btree_utils_var.h	Remove unnecessary #include references, per pgrminclude script.	14 years ago