Modified on Tue, 06 Oct 2020 at 08:57 PM

A Self join is a join in which it is joined with the table itself based on the condition. 

For e.g. The below employee table contains the details such as Employee ID, Employee Name, their Supervisor’s Employee ID. 

To get the supervisor name for all the employees,   a self join on the employee’s supervisor ID with Employee ID can be performed.

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