参考文章：https://www.postgresql.org/docs/current/locale.html
Microsoft Windows [版本 10.0.17134.765]
(c) 2018 Microsoft Corporation。保留所有权利。
C:\Users\Administrator>d:
D:\>cd highgo\database\5.6.3\bin
D:\highgo\database\5.6.3\bin>psql highgo://highgo:aaaaaa@192.168.93.1:5868
psql (5.6.3)
PSQL: Release 5.6.3
Connected to:
HighGo Database V5.6 Debug Edition Release 5.6.3 - 64-bit Production
输入 "help" 来获取帮助信息. ----->>>>中文
highgo=# \q
D:\highgo\database\5.6.3\bin>set lc_messages=C ----->>>>用大写的LC_MESSAGES环境变量名也可以。请注意，LC_MESSAGES的后边不要带空格
或者：
D:\highgo\database\5.6.3\bin>set lc_messages=en_us.utf-8
D:\highgo\database\5.6.3\bin>psql highgo://highgo:q1w2e3r4@192.168.80.1:5868
psql (5.6.3)
PSQL: Release 5.6.3
Connected to:
HighGo Database V5.6 Debug Edition Release 5.6.3 - 64-bit Production
Type "help" for help. ----->>>>英文
highgo=# select count(*)from pg_settings;
count
-------
291
(1 row) ----->>>>英文
highgo=#
