select a.id, g.equ_id, type, equ_type solution, level, occur_time, handler, handle_time, status,batch from alert_message a LEFT JOIN equ_gather g ON a.equ_id = g.equ_id
select a.id, g.equ_id, type, equ_type solution, level, occur_time, handler, handle_time, status,batch from alert_message a LEFT JOIN equ_gather g ON a.equ_id = g.equ_id