A nested query in the FROM clause is necessary to compute nested aggregate calculations because the SELECT statement does not allow an aggregate function inside an aggregate function.

Practice More Questions From: Concept Quiz for Module 12

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Identify the text pattern in this problem statement. Retrieve details of commercial water users who are not commercial business taxpayers. There is no 1-M relationship between commercial water users and commercial tax payers.

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Identify the text pattern in this problem statement. Retrieve details of products without sales. There is a 1-M relationship from product to sales.

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What relational operator produces a table in which values of a column from one input table are associated with all the values from a column of the second table?

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What happens to unmatched rows with the full outer join operator?

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What is the meaning of the LEFT keyword in the FROM clause such as Table1 LEFT JOIN Table2?

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A nested query in the FROM clause is necessary to compute nested aggregate calculations because the SELECT statement does not allow an aggregate function inside an aggregate function.

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What happens to unmatched rows with the one-sided outer join operator?

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The SELECT statement pattern for containment exceptions uses

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When mixing inner joins with a one-sided outer join, does the order of operations (joins and one-sided outer join) typically matter?

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What type of join column may be a candidate for a one-sided outer join?

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What are distinguishing features about Type I nested queries? More than one answer is possible.

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When can you NOT use a Type I nested query to perform a join in a SELECT statement?

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When must you use a Type I nested query in an UPDATE or DELETE statement?

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Indicate reasons for using a nested query in the FROM clause. Multiple answers are possible.

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In a university with graduate teaching instructors, a query to determine faculty who are not students is an example of a membership exception.

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Identify the key element of the text pattern for contaiment exceptions.

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Identify the key element of the text pattern for membership exceptions.

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The SELECT statement pattern for membership exceptions uses

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The choice of a join style is a matter of preference except for applicability of the join style.

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Indicate when a SELECT statement for a containment exception should use the DISTINCT keyword inside the COUNT function in the HAVING condition.

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