sql表加入了问题 [英] sql table joins problems
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问题描述
我有一个问题我在一张桌子上有两列我必须在第一张桌子的每一列上的两个不同的桌子上加入
I have a problem I have two columns in an table i must join on two diffrent tables on on each column of the first table
SELECT * from dbo.Sheet1$ s1
left join tblOrderDetails od ON CAST(CAST(s1.DELIVERY_ID AS DECIMAL(20)) AS VARCHAR(20)) = od.ExtReference
这样可以加入一个表，但我也必须加入dbo.Sheet1 $在dbo.Sheet1 $ .model = workflow.model
请帮帮我
this works fine to join on one table but i also have to join dbo.Sheet1$ on dbo.Sheet1$.model = workflow.model
please help me
推荐答案
s1
left join tblOrderDetails od ON CAST（CAST（s1.DELIVERY_ID AS） DECIMAL （ 20 ）） AS VARCHAR （ 20 ））= od.ExtReference
s1 left join tblOrderDetails od ON CAST(CAST(s1.DELIVERY_ID AS DECIMAL(20)) AS VARCHAR(20)) = od.ExtReference
这可以在一张桌子上加入，但我也必须加入dbo.Sheet1
this works fine to join on one table but i also have to join dbo.Sheet1
on dbo.Sheet1
on dbo.Sheet1
.model = workflow.model
请帮帮我
.model = workflow.model
please help me
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