CREATE TABLE [dbo].[Table_2]( [rq] [datetime] NOT NULL, [shengfu] [nvarchar](4) NOT NULL ) ON [PRIMARY] --insert into Table_2(rq,shengfu) values(\'2010-9-1\',\'胜\') --insert into Table_2(rq,shengfu) values(\'2010-9-1\',\'胜\') --insert into Table_2(rq,shengfu) values(\'2010-9-1\',\'负\') --insert into Table_2(rq,shengfu) values(\'2010-9-1\',\'负\') --insert into Table_2(rq,shengfu) values(\'2010-9-2\',\'负\') --insert into Table_2(rq,shengfu) values(\'2010-9-2\',\'负\') --insert into Table_2(rq,shengfu) values(\'2010-9-2\',\'负\') --insert into Table_2(rq,shengfu) values(\'2010-9-2\',\'胜\')
生成格式如下：
| rq | 胜 | 负 |
| 2010-09-01 | 2 | 3 |
| 2010-09-02 | 1 | 3 |
select rq, sum(CASe when shengfu =\'胜\' then 1 else 0 end) as 胜,
sum( CASe when shengfu =\'负\' then 1 else 0 end) as 负
from Table_2
group by rq