sql多表行转列,级联行转列

现有两表A，B

A表存储商品点击日志，B表存储商品

要求显示当天所有商品点击量列表并附带总数并按天排序

declare @sql varchar(2000)
	 set @sql='select CONVERT(varchar(100), a.[Time], 23) as 时间,count(b.title) as 总数'
	 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)
           

显示结果

时间	总数	商品1	商品2	商品3
2013-11-11	5	1	4
2013-11-10	13	2	11	1