Consider the following query: SELECT firstname, lastname, SUM(salary) FROM employees GROUP BY firstname, lastname HAVING SUM(salary) > 20000 ORDER BY lastname ASC Which part of the sample code above contains the SQL default and is therefore NOT necessary in the SQL statement?

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  1. SUM

  2. >

  3. Group by

  4. ASC

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Correct Option: D

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) SUM - This option is incorrect because the SUM function is necessary in the SQL statement to calculate the sum of the salaries.

Option B) > - This option is incorrect because the greater than operator (>) is necessary in the SQL statement to compare the sum of the salaries with the value 20000.

Option C) Group by - This option is incorrect because the GROUP BY clause is necessary in the SQL statement to group the results by the firstname and lastname columns.

Option D) ASC - This option is correct because the ASC keyword is not necessary in the SQL statement. ASC is used to specify ascending order when sorting the results. If ASC is not specified, the default sorting order is ascending. Therefore, including ASC in the ORDER BY clause is not necessary.

The correct answer is D. This option is correct because the ASC keyword is not necessary in the SQL statement.

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