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Question 87

Which two statements are true about the WHERE and HAVING clauses in a SELECT statement? (Choose two.)

WHERE and HAVING clauses can be used in the same statement only if applied to different table columns.

The WHERE clause can be used to exclude rows after dividing them into groups.

The HAVING clause can be used with aggregating functions in subqueries.

The WHERE clause can be used to exclude rows before dividing them into groups.

Aggregating functions and columns used in HAVING clauses must be specified in the SELECT list of a query.

Correct Answer: C, D

The HAVING clause can be used with aggregating functions in subqueries because it allows you to filter groups of rows after applying aggregate functions. The WHERE clause is used to exclude rows before they are divided into groups, which makes it a preliminary filter that helps in determining which rows are included in the groupings for aggregate functions.

Discussion

yaya32Options: CD

CD for me

RIDA_007Options: DE

C is incorrect because subqueries using aggregate functions typically do not use HAVING clauses; rather, HAVING is used in the outer query to filter the results of aggregates