sql 数据分组统计与合计

需求

假定有这样得表

需要根据department，categoryid，standard 分组并且，status = 0，和status = 1 得状况来统计在库和非在库，status = 0代表在库，status = 1 代表非在库，如果将数据统计出来

departmentid	categoryid	standard     num    在库    出库
123					   517	规格1			5	 4		1                
123					   518	规格1			8	 7		1                

show me the code

select departmentId,categoryId,standard,count(0) AS num,
sum((case when (status = 0) then 1 else 0 end)) AS inlib,
sum((case when (status) then 1 else 0 end)) AS outlib from device 
group by departmentId,categoryId,standard