sql多表行轉(zhuǎn)列、級聯(lián)行轉(zhuǎn)列示例代碼
發(fā)布日期：2021-12-29 07:20 | 文章來源：gibhub
A表存儲商品點擊日志，B表存儲商品
要求顯示當(dāng)天所有商品點擊量列表并附帶總數(shù)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(shù)'
select @sql =@sql+ ',sum(case b.title when '''+Title+''' then 1 else 0 end) as '+'['+Title+']'
from (select distinct title from B) as B
set @sql=@sql+' 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(jié)果
復(fù)制代碼 代碼如下:
declare @sql varchar(2000)
set @sql='select CONVERT(varchar(100), a.[Time], 23) as 時間,count(b.title) as 總數(shù)'
select @sql =@sql+ ',sum(case b.title when '''+Title+''' then 1 else 0 end) as '+'['+Title+']'
from (select distinct title from B) as B
set @sql=@sql+' 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(jié)果
| 時間 | 總數(shù) | 商品1 | 商品2 | 商品3 |
| 2013-11-11 | 5 | 1 | 0 | 4 |
| 2013-11-10 | 13 | 2 | 11 | 1 |
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