Syntax
------

CURRENT_USER, CURRENT_USER()

Description
-----------

Returns the user name and host name combination for the MariaDB account that
the server used to authenticate the current client. This account determines
your access privileges. The return value is a string in the utf8 character set.

The value of CURRENT_USER() can differ from the value of USER().
CURRENT_ROLE() returns the current active role.

Examples
--------

shell> mysql --user="anonymous"

select user(),current_user();
+---------------------+----------------+
| user()              | current_user() |
+---------------------+----------------+
| anonymous@localhost | @localhost     |
+---------------------+----------------+

When calling CURRENT_USER() in a stored procedure, it returns the owner of the
stored procedure, as defined with DEFINER.

URL: https://mariadb.com/kb/en/current_user/