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[postgres@pgserver ~]$ psql
psql (10beta2)
Type "help" for help.

postgres=# select current_user, session_user;
 current_user | session_user 
--------------+--------------
 postgres     | postgres
(1 row)

postgres=# set role to u_3;
SET
postgres=> select current_user, session_user;
 current_user | session_user 
--------------+--------------
 u_3          | postgres
(1 row)

postgres=> 

注意: 
current_user 是 the current user identifier 
session_user 是 the current session user identifier  ,注:我理解下来,就是启动该session的user。

参考自:
https://www.postgresql/docs/10/static/sql-set-role.html

本文标签: 数据库中postgresqlsessionuserCurrentUser