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What is Self Join?


Posted Date: 05 May 2008    Resource Type: Definitions    Category: General

Posted By: Vijaykumar Patil       Member Level: Gold
Rating:     Points: 5



This is a particular case when one table joins to itself, with one or two aliases to avoid confusion. A self join can be of any type, as long as the joined tables are the same. A self join is rather unique in that it involves a relationship with only one table. The common example is when company has a hierarchal reporting structure whereby one member of staff reports to another.



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