<!--
doc/src/sgml/ref/drop_statistics.sgml
PostgreSQL documentation
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<refentry id="SQL-DROPSTATISTICS">
 <indexterm zone="sql-dropstatistics">
  <primary>DROP STATISTICS</primary>
 </indexterm>

 <refmeta>
  <refentrytitle>DROP STATISTICS</refentrytitle>
  <manvolnum>7</manvolnum>
  <refmiscinfo>SQL - Language Statements</refmiscinfo>
 </refmeta>

 <refnamediv>
  <refname>DROP STATISTICS</refname>
  <refpurpose>remove extended statistics</refpurpose>
 </refnamediv>

 <refsynopsisdiv>
<synopsis>
DROP STATISTICS [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceable> [, ...]
</synopsis>
 </refsynopsisdiv>

 <refsect1>
  <title>Description</title>

  <para>
   <command>DROP STATISTICS</command> removes statistics from the database.
   Only the statistics owner, the schema owner, and superuser can drop a
   statistics.
  </para>

 </refsect1>

 <refsect1>
  <title>Parameters</title>

  <variablelist>
   <varlistentry>
    <term><literal>IF EXISTS</literal></term>
    <listitem>
     <para>
      Do not throw an error if the statistics do not exist. A notice is
      issued in this case.
     </para>
    </listitem>
   </varlistentry>

   <varlistentry>
    <term><replaceable class="PARAMETER">name</replaceable></term>
    <listitem>
     <para>
      The name (optionally schema-qualified) of the statistics to drop.
     </para>
    </listitem>
   </varlistentry>

  </variablelist>
 </refsect1>

 <refsect1>
  <title>Examples</title>

  <para>
   To destroy two statistics objects on different schemas, without failing
   if they don't exist:

<programlisting>
DROP STATISTICS IF EXISTS
    accounting.users_uid_creation,
    public.grants_user_role;
</programlisting>
  </para>

 </refsect1>

 <refsect1>
  <title>Compatibility</title>

  <para>
   There's no <command>DROP STATISTICS</command> command in the SQL standard.
  </para>
 </refsect1>

 <refsect1>
  <title>See Also</title>

  <simplelist type="inline">
   <member><xref linkend="sql-alterstatistics"></member>
   <member><xref linkend="sql-createstatistics"></member>
  </simplelist>
 </refsect1>

</refentry>
