一张表，里面有? id? name?? state??? customerid 4个字段，其中status有3个值0 1 2 ，用一条sql查询出此种格式

customerid  state-0   state-1  state-2 
001              11          212        333 
002              15          545        3 

sql如下：

select customid,  
    count(case status when 0 then status else null end) as status-0,  
    count(case status when 1 then status else null end) as status-1,  
    count(case status when 2 then status else null end) as status-2  
    from custom group by customid.  

?