INSTALL SONAME 'auth_named_pipe';
CREATE USER 'USERNAME' IDENTIFIED WITH named_pipe;
SELECT USER(),CURRENT_USER();
USER()	CURRENT_USER()
USERNAME@localhost	USERNAME@%
DROP USER 'USERNAME';
CREATE USER nosuchuser IDENTIFIED WITH named_pipe;
ERROR 28000: Access denied for user 'nosuchuser'@'localhost'
DROP USER nosuchuser;
UNINSTALL SONAME 'auth_named_pipe';