日期:2014-05-20  浏览次数:20866 次

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

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自行Google
sql纵表转横表
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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];

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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];

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SQL行列转换
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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];
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