SQL语句查询
某表内容如下:
date result
2005-05-09 胜
2005-05-09 胜
2005-05-09 负
2005-05-09 负
2005-05-10 胜
2005-05-10 负
2005-05-10 负
如果要生成下列结果,该如何写sql语句?
胜 负
2005-05-09 2 2
2005-05-10 1 2
------解决方案-------------------- 自行Google
sql纵表转横表
------解决方案-------------------- SQL code
select [date] as 日期,count(case when result='胜' then 1 end) as 胜,count(case when result='负' then 1 end) as 负 from T group by [date];
------解决方案-------------------- 探讨 SQL code select [date] as 日期,count(case when result='胜' then 1 end) as 胜,count(case when result='负' then 1 end) as 负 from T group by [date];
------解决方案-------------------- SQL行列转换
------解决方案-------------------- 引用: select [date] as 日期,count(case when result='胜' then 1 end) as 胜,count(case when result='负' then 1 end) as 负 from T group by [date]; [/Quote]