sql根据某个字段求和并显示其他字段
select sum(duration_time) as quantity,account,user_name,dept_name,parent_dept from blade_employee_training_record_detail where tenant_id=#{tenantId} <if test="startDate !=null and startDate !='' "> and end_training_date >= #{startDate} </if> <if test="endDate !=null and endDate !='' "> and end_training_date <= #{endDate} </if> GROUP BY account,user_name,dept_name,parent_dept