Sunday, April 14, 2013

GROUP BY - Multiple Grouping Columns - What if?

GROUP BY - Multiple Grouping Columns - What if?

What if you ALSO want to display their lastname for the query below:

SELECT max(salary), dept
FROM employee
GROUP BY dept;

What you'll need to do is:

SELECT lastname, max(salary), dept
FROM employee
GROUP BY dept, lastname;


This is a called "multiple grouping columns".

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