postgres=# \lList of databasesName    |  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/postgrestemplate1 | postgres | UTF8     | zh_CN.UTF-8 | zh_CN.UTF-8 | =c/postgres          +|          |          |             |             | postgres=CTc/postgres
(4 rows)postgres=#

postgres=# \dList of relationsSchema |       Name        | Type  |  Owner
--------+-------------------+-------+----------public | gao_chinese_order | table | postgrespublic | tbl_chinese_order | table | postgres
(2 rows)postgres=#

insert into tbl_chinese_order values ('刘少奇');insert into tbl_chinese_order values ('刘德华');insert into tbl_chinese_order values ('张学友');

postgres=# select * from tbl_chinese_order order by info;info
--------刘少奇刘德华张学友
(3 rows)

postgres=# select * from tbl_chinese_order order by convert_to(info,'SQL_ASCII');info
--------刘少奇刘德华张学友
(3 rows)postgres=#

postgres=# select * from tbl_chinese_order order by convert_to(info,'GBK');info
--------刘德华刘少奇张学友
(3 rows)postgres=#

postgres=# select * from tbl_chinese_order order by convert_to(info,'GB18030');info
--------刘德华刘少奇张学友
(3 rows)postgres=#