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+<!--
+doc/src/sgml/ref/alter_statistics.sgml
+PostgreSQL documentation
+-->
+
+<refentry id="SQL-ALTERSTATISTICS">
+ <indexterm zone="sql-alterstatistics">
+  <primary>ALTER STATISTICS</primary>
+ </indexterm>
+
+ <refmeta>
+  <refentrytitle>ALTER STATISTICS</refentrytitle>
+  <manvolnum>7</manvolnum>
+  <refmiscinfo>SQL - Language Statements</refmiscinfo>
+ </refmeta>
+
+ <refnamediv>
+  <refname>ALTER STATISTICS</refname>
+  <refpurpose>
+   change the definition of a extended statistics
+  </refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+<synopsis>
+ALTER STATISTICS <replaceable class="parameter">name</replaceable> OWNER TO { <replaceable class="PARAMETER">new_owner</replaceable> | CURRENT_USER | SESSION_USER }
+ALTER STATISTICS <replaceable class="parameter">name</replaceable> RENAME TO <replaceable class="parameter">new_name</replaceable>
+ALTER STATISTICS <replaceable class="parameter">name</replaceable> SET SCHEMA <replaceable class="parameter">new_schema</replaceable>
+</synopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+  <title>Description</title>
+
+  <para>
+   <command>ALTER STATISTICS</command> changes the parameters of an existing
+   extended statistics.  Any parameters not specifically set in the
+   <command>ALTER STATISTICS</command> command retain their prior settings.
+  </para>
+
+  <para>
+   You must own the statistics to use <command>ALTER STATISTICS</>.
+   To change a statistics' schema, you must also have <literal>CREATE</>
+   privilege on the new schema.
+   To alter the owner, you must also be a direct or indirect member of the new
+   owning role, and that role must have <literal>CREATE</literal> privilege on
+   the statistics' schema.  (These restrictions enforce that altering the owner
+   doesn't do anything you couldn't do by dropping and recreating the statistics.
+   However, a superuser can alter ownership of any statistics anyway.)
+  </para>
+ </refsect1>
+
+ <refsect1>
+  <title>Parameters</title>
+
+   <para>
+    <variablelist>
+     <varlistentry>
+      <term><replaceable class="parameter">name</replaceable></term>
+      <listitem>
+       <para>
+        The name (optionally schema-qualified) of the statistics to be altered.
+       </para>
+      </listitem>
+     </varlistentry>
+
+     <varlistentry>
+      <term><replaceable class="PARAMETER">new_owner</replaceable></term>
+      <listitem>
+       <para>
+        The user name of the new owner of the statistics.
+       </para>
+      </listitem>
+     </varlistentry>
+
+     <varlistentry>
+      <term><replaceable class="parameter">new_name</replaceable></term>
+      <listitem>
+       <para>
+        The new name for the statistics.
+       </para>
+      </listitem>
+     </varlistentry>
+
+     <varlistentry>
+      <term><replaceable class="parameter">new_schema</replaceable></term>
+      <listitem>
+       <para>
+        The new schema for the statistics.
+       </para>
+      </listitem>
+     </varlistentry>
+
+    </variablelist>
+   </para>
+  </refsect1>
+
+ <refsect1>
+  <title>Compatibility</title>
+
+  <para>
+   There's no <command>ALTER STATISTICS</command> command in the SQL standard.
+  </para>
+ </refsect1>
+
+ <refsect1>
+  <title>See Also</title>
+
+  <simplelist type="inline">
+   <member><xref linkend="sql-createstatistics"></member>
+   <member><xref linkend="sql-dropstatistics"></member>
+  </simplelist>
+ </refsect1>
+
+</refentry>