Question

What is the significance of the statement “GROUP BY d.name” in the following MySQL statement?

SELECT d.name, COUNT (emp_id) emp_no
FROM department d INNER JOIN Employee e
ON d.dept_id=e.emp_id
GROUP BY d.name

a.

Aggregation of the field “name” of both table

b.

Aggregation of the field “name” of table “department”

c.

Sorting of the field “name”

d.

None of the mentioned

Posted under MySQL Database

Answer: (b).Aggregation of the field “name” of table “department”

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Q. What is the significance of the statement “GROUP BY d.name” in the following MySQL statement?

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