From: Bruce Momjian <bruce@momjian.us>
Date: Tue, 12 May 2020 01:24:08 +0000 (-0400)
Subject: doc:  PG 13 relnotes:  add duplicate btree optimization details
X-Git-Tag: REL_13_BETA1~71
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=aa976d3b9004bd2c275e4ad17fa897ce5fe5127e;p=thirdparty%2Fpostgresql.git

doc:  PG 13 relnotes:  add duplicate btree optimization details
---

diff --git a/doc/src/sgml/release-13.sgml b/doc/src/sgml/release-13.sgml
index 102b8366c51..83470e9ba15 100644
--- a/doc/src/sgml/release-13.sgml
+++ b/doc/src/sgml/release-13.sgml
@@ -359,9 +359,9 @@ More efficiently store duplicates in btree indexes (Anastasia Lubennikova, Peter
 </para>
 
 <para>
-This allows efficient btree indexing of low cardinality columns.
-Users upgrading with pg_upgrade will need to use REINDEX to make use of
-this feature.
+This allows efficient btree indexing of low cardinality columns by storing
+duplicate keys only once.  Users upgrading with pg_upgrade will need to
+use REINDEX to make use of this feature.
 </para>
 
 </listitem>