From 4e57668da475f47242d8552df371a3dbef5205f8 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Fri, 19 Sep 2008 19:03:41 +0000
Subject: Create a selectivity estimation function for the text search @@
 operator.

Jan Urbanski
---
 doc/src/sgml/catalogs.sgml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'doc/src')

diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml
index 646e37d79fc..40f1ce568ed 100644
--- a/doc/src/sgml/catalogs.sgml
+++ b/doc/src/sgml/catalogs.sgml
@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/catalogs.sgml,v 2.174 2008/09/15 18:43:41 tgl Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/catalogs.sgml,v 2.175 2008/09/19 19:03:40 tgl Exp $ -->
 <!--
  Documentation of the system catalogs, directed toward PostgreSQL developers
  -->
@@ -6664,6 +6664,9 @@
        A list of the frequencies of the most common values or elements,
        i.e., number of occurrences of each divided by total number of rows.
        (NULL when <structfield>most_common_vals</structfield> is.)
+       For some datatypes such as <type>tsvector</>, it can also store some
+       additional information, making it longer than the
+       <structfield>most_common_vals</> array.
       </entry>
      </row>
 
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