Merge pull request #242 from jingsam/alter_domain

fix alter_domain.sgml

Author: ChenHuajun

postgresql/doc/src/sgml/ref/alter_domain.sgml

@@ -3,7 +3,7 @@ doc/src/sgml/ref/alter_domain.sgml
 PostgreSQL documentation
 -->
 
-<refentry id="SQL-ALTERDOMAIN">
+<refentry id="sql-alterdomain">
 <!--==========================orignal english content==========================
  <indexterm zone="sql-alterdomain">
   <primary>ALTER DOMAIN</primary>
@@ -153,7 +153,7 @@ ____________________________________________________________________________-->
 <!--==========================orignal english content==========================
      <para>
       This form adds a new constraint to a domain using the same syntax as
-      <xref linkend="SQL-CREATEDOMAIN">.
+      <xref linkend="sql-createdomain">.
       When a new constraint is added to a domain, all columns using that
       domain will be checked against the newly added constraint.  These
       checks can be suppressed by adding the new constraint using the
@@ -165,7 +165,7 @@ ____________________________________________________________________________-->
      </para>
 ____________________________________________________________________________-->
      <para>
-      这种形式使用和<xref linkend="SQL-CREATEDOMAIN"/>相同的语法为一个
+      这种形式使用和<xref linkend="sql-createdomain"/>相同的语法为一个
       域增加一个新的约束。当一个新的约束被增加到一个域时，所有使用该域的列
       都会被根据新加的约束进行检查。可以通过增加使用
       <literal>NOT VALID</literal>选项的新约束来抑制这类检查，而该约束则可
@@ -347,7 +347,7 @@ ____________________________________________________________________________-->
      </varlistentry>
 
      <varlistentry>
-      <term><replaceable class="parameter">NOT VALID</replaceable></term>
+      <term><literal>NOT VALID</literal></term>
       <listitem>
        <para>
         Do not verify existing column data for constraint validity.
@@ -522,20 +522,20 @@ ____________________________________________________________________________-->
 
 <!--==========================orignal english content==========================
   <para>
-   Currently, <command>ALTER DOMAIN ADD CONSTRAINT</>, <command>ALTER
-   DOMAIN VALIDATE CONSTRAINT</>, and <command>ALTER DOMAIN SET NOT NULL</>
-   will fail if the validated named domain or
-   any derived domain is used within a composite-type column of any
-   table in the database.  They should eventually be improved to be
-   able to verify the new constraint for such nested columns.
+   Currently, <command>ALTER DOMAIN ADD CONSTRAINT</command>, <command>ALTER
+   DOMAIN VALIDATE CONSTRAINT</command>, and <command>ALTER DOMAIN SET NOT
+   NULL</command> will fail if the named domain or any derived domain is used
+   within a container-type column (a composite, array, or range column) in
+   any table in the database.  They should eventually be improved to be able
+   to verify the new constraint for such nested values.
   </para>
 ____________________________________________________________________________-->
   <para>
-   当前，如果经过验证的所提及的域或者任何衍生域被数据库中的任意表的一个组合类型
-   列使用，<command>ALTER DOMAIN ADD CONSTRAINT</command>、<command>ALTER
+   当前，如果域或者任何衍生域被数据库中的任意表的一个容器类型
+   列（组合、数组、范围类型的列）使用，<command>ALTER DOMAIN ADD CONSTRAINT</command>、<command>ALTER
    DOMAIN VALIDATE CONSTRAINT</command>和
-   <command>ALTER DOMAIN SET NOT NULL</command>将会失败。它们最终将
-   会被改进成能够对这类嵌套列进行新约束验证。
+   <command>ALTER DOMAIN SET NOT NULL</command>将会失败。这些命令最终将
+   会被改进成能够对这类嵌套值进行约束验证。
   </para>
 
  </refsect1>
@@ -628,7 +628,7 @@ ALTER DOMAIN zipcode SET SCHEMA customers;
 </programlisting></para>
  </refsect1>
 
- <refsect1 id="SQL-ALTERDOMAIN-compatibility">
+ <refsect1 id="sql-alterdomain-compatibility">
 <!--==========================orignal english content==========================
   <title>Compatibility</title>
 ____________________________________________________________________________-->
@@ -656,7 +656,7 @@ ____________________________________________________________________________-->
   </para>
  </refsect1>
 
- <refsect1 id="SQL-ALTERDOMAIN-see-also">
+ <refsect1 id="sql-alterdomain-see-also">
 <!--==========================orignal english content==========================
   <title>See Also</title>
 ____________________________________________________________________________-->