mysql 按类型查询个数和总数

mysql 按类型分组 查询状态的个数和总数
SELECT file_type,sum(data_count) total
,sum(case Load_status when 1 then data_count else null end) success
,sum(case Load_status when 0 then data_count else null end) fail
from 
qarc_file_load  GROUP BY file_type;