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Tom Lane 34249b3b58 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
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data	Add files forgotten in f576b17cd6	10 years ago
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	Handle equality operator in contrib/pg_trgm	5 years ago
pg_trgm--1.0--1.1.sql	Fix typo in update scripts for some contrib modules.	12 years ago
pg_trgm--1.1--1.2.sql	Add word_similarity to pg_trgm contrib module.	10 years ago
pg_trgm--1.2--1.3.sql	Make contrib modules' installation scripts more secure.	5 years ago
pg_trgm--1.3--1.4.sql	Add strict_word_similarity to pg_trgm module	8 years ago
pg_trgm--1.3.sql	Remove support for upgrading extensions from "unpackaged" state.	6 years ago
pg_trgm--1.4--1.5.sql	Fix typo in contrib/pg_trgm/pg_trgm--1.4--1.5.sql	5 years ago
pg_trgm--1.5--1.6.sql	Handle equality operator in contrib/pg_trgm	5 years ago
pg_trgm.control	Handle equality operator in contrib/pg_trgm	5 years ago
trgm.h	Handle equality operator in contrib/pg_trgm	5 years ago
trgm_gin.c	Handle equality operator in contrib/pg_trgm	5 years ago
trgm_gist.c	Handle equality operator in contrib/pg_trgm	5 years ago
trgm_op.c	Disallow setting bogus GUCs within an extension's reserved namespace.	4 years ago
trgm_regexp.c	Fix misbehavior in contrib/pg_trgm with an unsatisfiable regex.	3 years ago