Merge pull request #329 from chegong18/master

submit  some pg13 doc translation files which list below.

Author: ChenHuajun

postgresql/doc/src/sgml/datatype.sgml

@@ -251,7 +251,6 @@ SELECT dblink_connect('myconn', 'dbname=postgres options=-csearch_path=');
 -− FOREIGN DATA WRAPPER functionality
 -− Note: local connection must require password authentication for this to work properly
 -−       Otherwise, you will receive the following error from dblink_connect():
--−       -−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−-−
 -−       ERROR:  password is required
 -−       DETAIL:  Non-superuser cannot connect if the server does not request a password.
 -−       HINT:  Target server's authentication method must be changed.
@@ -271,7 +270,7 @@ SELECT dblink_connect('myconn', 'fdtest');
  OK
 (1 row)
 
-SELECT * FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[]);
+SELECT * FROM dblink('myconn', 'SELECT * FROM foo') AS t(a int, b text, c text[]);
  a  | b |       c       
 -−-−+-−-+-−-−-−-−-−-−-−-
   0 | a | {a0,b0,c0}
@@ -311,7 +310,6 @@ SELECT dblink_connect('myconn', 'dbname=postgres options=-csearch_path=');
 -- FOREIGN DATA WRAPPER functionality
 -- Note: local connection must require password authentication for this to work properly
 --       Otherwise, you will receive the following error from dblink_connect():
---       ----------------------------------------------------------------------
 --       ERROR:  password is required
 --       DETAIL:  Non-superuser cannot connect if the server does not request a password.
 --       HINT:  Target server's authentication method must be changed.
@@ -331,7 +329,7 @@ SELECT dblink_connect('myconn', 'fdtest');
  OK
 (1 row)
 
-SELECT * FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[]);
+SELECT * FROM dblink('myconn', 'SELECT * FROM foo') AS t(a int, b text, c text[]);
  a  | b |       c
 ----+---+---------------
   0 | a | {a0,b0,c0}
@@ -1131,11 +1129,11 @@ ____________________________________________________________________________-->
       <para>
        The SQL command that you wish to execute in the remote database,
        for example
-       <literal>insert into foo values(0,'a','{"a0","b0","c0"}')</literal>.
+       <literal>insert into foo values(0, 'a', '{"a0","b0","c0"}')</literal>.
       </para>
 ____________________________________________________________________________-->
       <para>
-       你希望在远程数据库中执行的 SQL 命令，例如<literal>insert into foo values(0,'a','{"a0","b0","c0"}')</literal>。
+       你希望在远程数据库中执行的 SQL 命令，例如<literal>insert into foo values(0, 'a', '{"a0","b0","c0"}')</literal>。
       </para>
      </listitem>
     </varlistentry>
@@ -1192,7 +1190,7 @@ SELECT dblink_connect('dbname=dblink_test_standby');
  OK
 (1 row)
 
-SELECT dblink_exec('insert into foo values(21,''z'',''{"a0","b0","c0"}'');');
+SELECT dblink_exec('insert into foo values(21, ''z'', ''{"a0","b0","c0"}'');');
    dblink_exec
 -&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-
  INSERT 943366 1
@@ -1204,7 +1202,7 @@ SELECT dblink_connect('myconn', 'dbname=regression');
  OK
 (1 row)
 
-SELECT dblink_exec('myconn', 'insert into foo values(21,''z'',''{"a0","b0","c0"}'');');
+SELECT dblink_exec('myconn', 'insert into foo values(21, ''z'', ''{"a0","b0","c0"}'');');
    dblink_exec
 -&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;-&minus;
  INSERT 6432584 1
@@ -1227,7 +1225,7 @@ SELECT dblink_connect('dbname=dblink_test_standby');
  OK
 (1 row)
 
-SELECT dblink_exec('insert into foo values(21,''z'',''{"a0","b0","c0"}'');');
+SELECT dblink_exec('insert into foo values(21, ''z'', ''{"a0","b0","c0"}'');');
    dblink_exec
 -----------------
  INSERT 943366 1
@@ -1239,7 +1237,7 @@ SELECT dblink_connect('myconn', 'dbname=regression');
  OK
 (1 row)
 
-SELECT dblink_exec('myconn', 'insert into foo values(21,''z'',''{"a0","b0","c0"}'');');
+SELECT dblink_exec('myconn', 'insert into foo values(21, ''z'', ''{"a0","b0","c0"}'');');
    dblink_exec
 ------------------
  INSERT 6432584 1