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+<!--
+doc/src/sgml/ref/do.sgml
+PostgreSQL documentation
+-->
+
+<refentry id="sql-do">
+ <indexterm zone="sql-do">
+  <primary>DO</primary>
+ </indexterm>
+
+ <indexterm zone="sql-do">
+  <primary>anonymous code blocks</primary>
+ </indexterm>
+
+ <refmeta>
+  <refentrytitle>DO</refentrytitle>
+  <manvolnum>7</manvolnum>
+  <refmiscinfo>SQL - Language Statements</refmiscinfo>
+ </refmeta>
+
+ <refnamediv>
+  <refname>DO</refname>
+  <refpurpose>execute an anonymous code block</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+<synopsis>
+DO [ LANGUAGE <replaceable class="parameter">lang_name</replaceable> ] <replaceable class="parameter">code</replaceable>
+</synopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+  <title>Description</title>
+
+  <para>
+   <command>DO</command> executes an anonymous code block, or in other
+   words a transient anonymous function in a procedural language.
+  </para>
+
+  <para>
+   The code block is treated as though it were the body of a function
+   with no parameters, returning <type>void</type>.  It is parsed and
+   executed a single time.
+  </para>
+
+  <para>
+   The optional <literal>LANGUAGE</literal> clause can be written either
+   before or after the code block.
+  </para>
+ </refsect1>
+
+ <refsect1>
+  <title>Parameters</title>
+
+  <variablelist>
+   <varlistentry>
+    <term><replaceable class="parameter">code</replaceable></term>
+    <listitem>
+     <para>
+      The procedural language code to be executed.  This must be specified
+      as a string literal, just as in <command>CREATE FUNCTION</command>.
+      Use of a dollar-quoted literal is recommended.
+     </para>
+    </listitem>
+   </varlistentry>
+
+   <varlistentry>
+    <term><replaceable class="parameter">lang_name</replaceable></term>
+    <listitem>
+     <para>
+      The name of the procedural language the code is written in.
+      If omitted, the default is <literal>plpgsql</literal>.
+     </para>
+    </listitem>
+   </varlistentry>
+  </variablelist>
+ </refsect1>
+
+ <refsect1>
+  <title>Notes</title>
+
+  <para>
+   The procedural language to be used must already have been installed
+   into the current database by means of <command>CREATE EXTENSION</command>.
+   <literal>plpgsql</literal> is installed by default, but other languages are not.
+  </para>
+
+  <para>
+   The user must have <literal>USAGE</literal> privilege for the procedural
+   language, or must be a superuser if the language is untrusted.
+   This is the same privilege requirement as for creating a function
+   in the language.
+  </para>
+
+  <para>
+   If <command>DO</command> is executed in a transaction block, then the
+   procedure code cannot execute transaction control statements.  Transaction
+   control statements are only allowed if <command>DO</command> is executed in
+   its own transaction.
+  </para>
+ </refsect1>
+
+ <refsect1 id="sql-do-examples">
+  <title>Examples</title>
+  <para>
+   Grant all privileges on all views in schema <literal>public</literal> to
+   role <literal>webuser</literal>:
+<programlisting>
+DO $$DECLARE r record;
+BEGIN
+    FOR r IN SELECT table_schema, table_name FROM information_schema.tables
+             WHERE table_type = 'VIEW' AND table_schema = 'public'
+    LOOP
+        EXECUTE 'GRANT ALL ON ' || quote_ident(r.table_schema) || '.' || quote_ident(r.table_name) || ' TO webuser';
+    END LOOP;
+END$$;
+</programlisting></para>
+ </refsect1>
+
+ <refsect1>
+  <title>Compatibility</title>
+
+  <para>
+   There is no <command>DO</command> statement in the SQL standard.
+  </para>
+ </refsect1>
+
+ <refsect1>
+  <title>See Also</title>
+
+  <simplelist type="inline">
+   <member><xref linkend="sql-createlanguage"/></member>
+  </simplelist>
+ </refsect1>
+</refentry>