Question

我有3张桌子

    with Album(RankNo,AlbumID, Name, FileName, PhotoID) as
(
select 
rank() over(partition by GA.AlbumID order by GP.photoid) as RankNo ,
GA.AlbumID,GA.Name, GP.FileName, GP.PhotoID, GP.CreatedDate from tblAlbum GA
inner join tblAlbumPhotos GAP on GAP.AlbumID=GA.AlbumID
inner join tblPhotos GP on GP.PhotoID=GAP.PhotoID
)
select RankNo,AlbumID, Name, FileName, PhotoID from Album where RankNo=1

这是从相册和1张照片中获取结果的查询

var elements = WebDriver.FindElements(By.Id("lastdays_day"));

但是，我希望来自tblAlbum表和FileName的结果任意1（随机）来自tblPhotos

Answer 1

试试这个（我只更改了你的订单条款）：

;with Album(RankNo,AlbumID, Name, FileName, PhotoID) as
(
select 
rank() over(partition by GA.AlbumID order by newId()) as RankNo ,
GA.AlbumID,GA.Name, GP.FileName, GP.PhotoID, GP.CreatedDate from tblAlbum GA
inner join tblAlbumPhotos GAP on GAP.AlbumID=GA.AlbumID
inner join tblPhotos GP on GP.PhotoID=GAP.PhotoID
)
select RankNo,AlbumID, Name, FileName, PhotoID from Album where RankNo=1

如何在1对多关系中编写查询，从sql查询中获取第2表中的随机1条记录

1 个答案: