Answer / manish

Sometimes you need to join a table to itself. To find the
name of each employee’s manager, you need to join the
EMPLOYEES table to itself, or perform a self join.

The Query:

SELECT worker.last_name || works for || manager.last_name
FROM emp worker, emp manager
Where worker.emp_id = manager.emp_id;

Answer / srinidhi patil

Joining A table to self is called as self join

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