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Four Types of Join
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<Kyle Chang>
posted
There are four types of Join as following.How should I desing table and what data should I fill to display their difference?


JOIN INNER PRODUCTID IN PRODUCT TO UNIQUE PRODUCTID IN QUANTATY

JOIN INNER PRODUCTID IN PRODUCT TO MULTIPLE PRODUCTID IN QUANTATY

JOIN LEFT_OUTER PRODUCTID IN PRODUCT TO UNIQUE PRODUCTID IN QUANTATY

JOIN LEFT_OUTER PRODUCTID IN PRODUCT TO MULTIPLE PRODUCTID IN QUANTATY
 
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RichH
Platinum Member
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Hi Kyle,
Basically a unique join is a one-to-one, where each host record has at most one matching record in the cross-referenced file.
A non-unique is a one-to-many, where each record can have multiple matching records in the cross-referenced file.
Check the doc for more info.
Hope this helps.
Rich


WebFOCUS 8202 Win 2012
Test - WebFOCUS 8203 on Win 2012
 
Posts: 173 | Registered: November 16, 2005Report This Post
Tony A
Expert
posted Hide Post
Kyle,

As a start, I would be inclined to have single occurences of a PRODUCTID in PRODUCT and multiple occurences in QUANTATY (Quantity?). In addition I would ensure that there are some records in PRODUCT that do not occur in QUANTATY. This combination should provide most scenarios for you.

Basically what you need is an understanding of how to construct test data and for that I would suggest contacting the testers within your company who should have an idea how to help you further. If you do not have any testers that know how to construct test data then you might want to turn to your religion if you have one.

T


In FOCUS
since 1986		WebFOCUS Server 8.2.01M, thru 8.2.07 on Windows Svr 2008 R2  
WebFOCUS App Studio 8.2.06 standalone on Windows 10 
 
Posts: 5694 | Location: United Kingdom | Registered: April 08, 2004Report This Post
susannah
Expert
posted Hide Post
Good One



In Focus since 1979///7706m/5 ;wintel 2008/64;OAM security; Oracle db, ///MRE/BID
 
Posts: 3811 | Location: Manhattan | Registered: October 28, 2003Report This Post
<Kyle Chang>
posted
Thank you for helps.
 
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