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Database Systems New SM
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What will be the output of the following query?
Which query will return only students who have a department assigned and that department exists in the departments table?
If Ahmed Raza has department_id = 30 and department 30 does not exist in the departments table, will he appear in the result of the above INNER JOIN?
If we want all employees listed, even if they have no department, which join should be used?
Which query will return only the employees who are assigned to a department that exists in the departments table?