sql多表行轉列,級聯行轉列

現有兩表A，B

A表存儲商品點選日志，B表存儲商品

要求顯示當天所有商品點選量清單并附帶總數并按天排序

declare @sql varchar(2000)
	 set @sql='select CONVERT(varchar(100), a.[Time], 23) as 時間,count(b.title) as 總數'
	 select @sql [email protected]+ ',sum(case b.title when '''+Title+'''	then 1 else 0 end) as '+'['+Title+']'
	 from (select distinct title from B) as B
	 set @[email protected]+' from A as a left join B as b on a.AId=B.Aid  
         group  by CONVERT(varchar(100), a.[Time], 23) order by CONVERT(varchar(100), a.[Time], 23) desc'
     
     
        exec(@sql)
           

顯示結果

時間	總數	商品1	商品2	商品3
2013-11-11	5	1	4
2013-11-10	13	2	11	1