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Document that analyzing an empty table doesn't update the statistics.
author
Robert Haas
<rhaas@postgresql.org>
Fri, 27 Jan 2012 17:13:49 +0000
(12:13 -0500)
committer
Robert Haas
<rhaas@postgresql.org>
Fri, 27 Jan 2012 17:14:23 +0000
(12:14 -0500)
Per a suggestion from Sergey Konoplev
doc/src/sgml/ref/analyze.sgml
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diff --git
a/doc/src/sgml/ref/analyze.sgml
b/doc/src/sgml/ref/analyze.sgml
index 7545fa5d869bb620a3d839dec8cd57c13cc71427..8c9057beb9190865e7cd0649eabea8119e07ebba 100644
(file)
--- 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>