Fully explain the following code:SELECT TutorKey, COUNT(SessionTimeKey) AS [Total Sessions]FROM SessionGROUP BY TutorKeyHAVING COUNT(SessionTimeKey)<4
What will be an ideal response?
The SELECT includes the column TutorKey and the aggregate function COUNT which returns a count of the column SessionTimeKey. Both are from the table Session. Because TutorKey is not a part of the aggregate function it must be included in a GROUP BY clause. The criteria for the query includes an aggregate function and so must use the HAVING key word.
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