Explain the concept of a self-join in SQL and provide an example scenario where it might be useful. - Study24x7
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Ashish Verma
21 Mar 2024 10:52 AM study24x7 study24x7

Explain the concept of a self-join in SQL and provide an example scenario where it might be useful.

A

A self-join is not supported in SQL

B

A self-join is used to combine rows from the same table based on a related column 

C

A self-join is used to combine rows from different tables

D

A self-join is only applicable to NoSQL databases

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