From db6de5b71ef2d91dde94fc0de8adf45372bc332d Mon Sep 17 00:00:00 2001
From: Robert Haas <rhaas@postgresql.org>
Date: Fri, 27 Jan 2012 12:13:49 -0500
Subject: [PATCH] Document that analyzing an empty table doesn't update the
statistics.
Per a suggestion from Sergey Konoplev
---
doc/src/sgml/ref/analyze.sgml | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/doc/src/sgml/ref/analyze.sgml b/doc/src/sgml/ref/analyze.sgml
index 7545fa5d869..8c9057beb91 100644
--- a/doc/src/sgml/ref/analyze.sgml
+++ b/doc/src/sgml/ref/analyze.sgml
@@ -190,6 +190,12 @@ ANALYZE [ VERBOSE ] [ <replaceable class="PARAMETER">table</replaceable> [ ( <re
or updated, the inheritance statistics will not be up to date unless you
run <command>ANALYZE</command> manually.
</para>
+
+ <para>
+ If the table being analyzed is completely empty, <command>ANALYZE</command>
+ will not record new statistics for that table. Any existing statistics
+ will be retained.
+ </para>
</refsect1>
<refsect1>
--
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