select plugin_status from information_schema.plugins where plugin_name='feedback';
plugin_status
ACTIVE
SELECT variable_value INTO @feedback_used FROM information_schema.feedback where variable_name = 'FEEDBACK used';
SELECT variable_value = @feedback_used + 1 FROM information_schema.feedback where variable_name = 'FEEDBACK used';
variable_value = @feedback_used + 1
1
select * from information_schema.feedback where variable_name like 'feed%'
       and variable_name not like '%_uid' and variable_name not like 'FEEDBACK used'
       and variable_name not like '%debug%';
VARIABLE_NAME	VARIABLE_VALUE
FEEDBACK version	1.1
FEEDBACK_HTTP_PROXY	
FEEDBACK_SEND_RETRY_WAIT	60
FEEDBACK_SEND_TIMEOUT	60
FEEDBACK_URL	http://mariadb.org/feedback_plugin/post
FEEDBACK_USER_INFO	mysql-test
