From 935f6666502250abde8615bc7805a6e5aa05a066 Mon Sep 17 00:00:00 2001
From: Alexander Korotkov
Date: Sun, 15 Nov 2020 08:52:12 +0300
Subject: Handle equality operator in contrib/pg_trgm

Obviously, in order to equality operator be satisfiable, target string must
contain all the trigrams of the search string.  On this base, we implement
equality operator in GiST/GIN indexes with recheck.

Discussion: https://postgr.es/m/CAOBaU_YWwtT7tdggtROacjdOdeYHCz-tmSwuC-j-TOG-g97J0w%40mail.gmail.com
Author: Julien Rouhaud
Reviewed-by: Tom Lane, Alexander Korotkov, Georgios Kokolatos, Erik Rijkers
---
 contrib/pg_trgm/trgm.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'contrib/pg_trgm/trgm.h')

diff --git a/contrib/pg_trgm/trgm.h b/contrib/pg_trgm/trgm.h
index b616953462e..405a1d95528 100644
--- a/contrib/pg_trgm/trgm.h
+++ b/contrib/pg_trgm/trgm.h
@@ -37,6 +37,7 @@
 #define WordDistanceStrategyNumber			8
 #define StrictWordSimilarityStrategyNumber	9
 #define StrictWordDistanceStrategyNumber	10
+#define EqualStrategyNumber					11
 
 typedef char trgm[3];
 
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