What formats are allowable for date formats in PostgreSQL? This question allows multiple answers.

Practice More Questions From: Concept Quiz for Module 4

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What is a column expression?

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The conceptual evaluation process indicates that

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COUNT(*) calculates

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The difference between COUNT() and COUNT(DISTINCT ) is

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Indicate components of the cross product join style in a SELECT statement. This question allows multiple answers.

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What formats are allowable for date formats in PostgreSQL? This question allows multiple answers.

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For complex problems involving joins and grouping, you can decompose a SELECT statement by

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What is the relationship between the GROUP BY and HAVING clauses?

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A condition involving an aggregate function must be placed in the HAVING clause.

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Grouping in a SELECT statement only occurs one time.

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How is a condition involving inexact text matching specified?

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Indicate components of the join operator style in a SELECT statement.

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When mixing the logical AND and OR operators in the WHERE clause, you should

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Name qualification is required if more than one table in a SELECT statement contains the same column name referenced in the statement.

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What are the requirements of the natural join operator? This question allows multiple answers.

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A SELECT statement with an aggregate function in the result and no GROUP BY clause (no grouping columns) generates

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A condition not involving an aggregate function can be placed in the WHERE or HAVING clauses.

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What is the relationship between the columns appearing in a SELECT clause and columns in a GROUP BY clause?

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SQL contains statements for (multiple answers possible)

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What happens to unmatched rows in a join operation?

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