阅读背景:

SQL选择返回默认值如果为空

来源:互联网 

Database: MS SQL 2008

数据库:MS SQL 2008

SELECT Listing.Title, Listing.MLS, Pictures.PictureTH, Pictures.Picture, Listing.ID 
FROM Listing INNER JOIN Pictures ON Listing.ID = Pictures.ListingID
WHERE (Pictures.ID = (SELECT MIN(ID) FROM Pictures WHERE (ListingID = Listing.ID)))
SELEC



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