翻译11.2 ref/do.sgml

Author: Steve888888

postgresql/doc/src/sgml/ref/do.sgml

@@ -3,7 +3,7 @@ doc/src/sgml/ref/do.sgml
 PostgreSQL documentation
 -->
 
-<refentry id="SQL-DO">
+<refentry id="sql-do">
 <!--==========================orignal english content==========================
  <indexterm zone="sql-do">
   <primary>DO</primary>
@@ -177,6 +177,21 @@ ____________________________________________________________________________-->
    是不可信的则必须是一个超级用户。这和创建一个该语言的函数对
    特权的要求相同。
   </para>
+<!--==========================orignal english content==========================
+
+  <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>
+
+____________________________________________________________________________-->
+  <para>
+   如果在事务块中执行<command>DO</command>，过程代码则无法执行事务控制语句。只有在自己的事务中执行<command>DO</command>时，才允许使用事务控制语句。
+
+  </para>
+
  </refsect1>
 
  <refsect1 id="sql-do-examples">