PostgreSQL对汉字按拼音排序

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转自:https://www.cnblogs.com/gaojian/p/3188609.html

postgres=# \\l
                                  List of databases
   Name    |  Owner   | Encoding |   Collate   |    Ctype    |   Access privileges   
-----------+----------+----------+-------------+-------------+-----------------------
 db_utf8   | gao      | UTF8     | zh_CN.UTF-8 | zh_CN.UTF-8 | 
 postgres  | postgres | UTF8     | zh_CN.UTF-8 | zh_CN.UTF-8 | 
 template0 | postgres | UTF8     | zh_CN.UTF-8 | zh_CN.UTF-8 | =c/postgres          +
           |          |          |             |             | postgres=CTc/postgres
 template1 | postgres | UTF8     | zh_CN.UTF-8 | zh_CN.UTF-8 | =c/postgres          +
           |          |          |             |             | postgres=CTc/postgres
(4 rows)

postgres=#
postgres=# \\d
               List of relations
 Schema |       Name        | Type  |  Owner   
--------+-------------------+-------+----------
 public | gao_chinese_order | table | postgres
 public | tbl_chinese_order | table | postgres
(2 rows)

postgres=#
insert into tbl_chinese_order values (\'***\');

insert into tbl_chinese_order values (\'*德华\');

insert into tbl_chinese_order values (\'张学友\');

普通排序

postgres=# select * from tbl_chinese_order order by info;
  info  
--------
 ***
 *德华
 张学友
(3 rows)
postgres=# select * from tbl_chinese_order order by convert_to(info,\'SQL_ASCII\');
  info  
--------
 ***
 *德华
 张学友
(3 rows)

postgres=#

按拼音排序

postgres=# select * from tbl_chinese_order order by convert_to(info,\'GBK\');
  info  
--------
 *德华
 ***
 张学友
(3 rows)

postgres=#
postgres=# select * from tbl_chinese_order order by convert_to(info,\'GB18030\');
  info  
--------
 *德华
 ***
 张学友
(3 rows)

postgres=#

 

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