postgres

History

Tom Lane 3a7a3eaaf9 Put "excludeOnly" GIN scan keys at the end of the scankey array. Commit `4b754d6c1` introduced the concept of an excludeOnly scan key, which cannot select matching index entries but can reject non-matching tuples, for example a tsquery such as '!term'. There are poorly-documented assumptions that such scan keys do not appear as the first scan key. ginNewScanKey did nothing to ensure that, however, with the result that certain GIN index searches could go into an infinite loop while apparently-equivalent queries with the clauses in a different order were fine. Fix by teaching ginNewScanKey to place all excludeOnly scan keys after all not-excludeOnly ones. So far as we know at present, it might be sufficient to avoid the case where the very first scan key is excludeOnly; but I'm not very convinced that there aren't other dependencies on the ordering. Bug: #19031 Reported-by: Tim Wood <washwithcare@gmail.com> Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/19031-0638148643d25548@postgresql.org Backpatch-through: 13		2 weeks ago
..
data	…
expected	Put "excludeOnly" GIN scan keys at the end of the scankey array.	2 weeks ago
sql	Put "excludeOnly" GIN scan keys at the end of the scankey array.	2 weeks ago
.gitignore	…
Makefile	…
meson.build	Update copyright for 2025	8 months ago
pg_trgm--1.0--1.1.sql	…
pg_trgm--1.1--1.2.sql	…
pg_trgm--1.2--1.3.sql	…
pg_trgm--1.3--1.4.sql	…
pg_trgm--1.3.sql	…
pg_trgm--1.4--1.5.sql	…
pg_trgm--1.5--1.6.sql	…
pg_trgm.control	…
trgm.h	Fix an issue with index scan using pg_trgm due to char signedness on different architectures.	7 months ago
trgm_gin.c	New header varatt.h split off from postgres.h	3 years ago
trgm_gist.c	Remove various unnecessary (char *) casts	7 months ago
trgm_op.c	Use PG_MODULE_MAGIC_EXT in our installable shared libraries.	6 months ago
trgm_regexp.c	Update copyright for 2025	8 months ago