The SQL view obtains one field based on the where condition.

Source: Internet
Author: User

The SQL view obtains one field based on the where condition.


First, we will introduce the usage of Case... When... Then... End:

CASEJiXiaoFind_RowID

WHEN '1' THENJiXiao_Money1
WHEN '2' THEN JiXiao_Money2
WHEN '3' THEN JiXiao_Money3
WHEN '4' THEN JiXiao_Money4
ELSE JiXiao_Money5

END

Example:


Is a view, I want to add a field JiXiao_Money (performance amount) in table B );

If

JiXiaoFind_RowID = 1 then JiXiao_Money = JiXiao_Money1

JiXiaoFind_RowID = 1 then JiXiao_Money = JiXiao_Money1

JiXiaoFind_RowID = 1 then JiXiao_Money = JiXiao_Money3

JiXiaoFind_RowID = 1 then JiXiao_Money = JiXiao_Money1

JiXiaoFind_RowID = 1 then JiXiao_Money = JiXiao_Money1

What should we do?

**************************************** ************************************

Specific Practices:

Add the red part to the view.

 

 


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