1select variable_name from information_schema.session_variables where variable_name=
2(select variable_name from information_schema.session_variables where variable_name= 'BASEDIR');
3variable_name
4BASEDIR
5Warnings:
6Warning	1287	'INFORMATION_SCHEMA.SESSION_VARIABLES' is deprecated and will be removed in a future release. Please use performance_schema.session_variables instead
7