1、原表test結構如下：
2、我們想要得到的結果爲：
3、第一種方法：靜態方法，即列固定
SQL如下：
select * from ( SELECT date,name,sum(num) num FROM test GROUP BY date,name ) t pivot ( sum(num) for t.name in ([alan],[andy],[baicl])) as a
4、第二種方法：動態方法，即列爲通過SQL查詢獲取
SQL如下：
declare @sql nvarchar(4000)
select @sql=isnull(@sql+',','')+t.name
from (select distinct quotename(name) as name from test) t
set @sql='select * from (SELECT date,name,sum(num) num FROM test GROUP BY date,name) t pivot ( sum(num) for t.name in ('+@sql+')) as a'
exec(@sql)