本文介绍了如何使用子查询将这些查询合并为 1的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
Select * from HotelPerson
Where RoomID IN (select ID from HotelRoom Where BookingID = 36 )
Select * from HotelCancelationPolicy
Where RoomID IN (select ID from HotelRoom Where BookingID = 36 )
如何将这两个查询合并为 1 个查询?
How can I merge these both queries into 1 query ?
推荐答案
这会将两个表中的所有列都显示在一个表中.
This will give you all the columns from both tables in one table.
SELECT *
FROM HotelPerson A, HotelCancelationPolicy B
WHERE A.RoomID = B.RoomID
AND A.RoomID IN (SELECT ID FROM HotelRoom WHERE BookingID = 36)
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