Exam 11: Group Functions
Exam 1: Overview of Database Concepts108 Questions
Exam 2: Basic SQL Select Statements121 Questions
Exam 3: Table Creation and Management136 Questions
Exam 4: Constraints132 Questions
Exam 5: Data Manipulation and Transaction Control136 Questions
Exam 6: Additional Database Objects138 Questions
Exam 7: User Creation and Management130 Questions
Exam 8: Restricting Rows and Sorting Data132 Questions
Exam 9: Joining Data From Multiple Tables119 Questions
Exam 10: Selected Single-Row Functions133 Questions
Exam 11: Group Functions137 Questions
Exam 12: Subqueries and Merge Statements131 Questions
Exam 13: Views133 Questions
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Contents of the BOOKS table
-Based on the contents of the BOOKS table,which of the following SQL statements will return the total profit generated by books provided by publisher 4?

(Multiple Choice)
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The optional UNIQUE keyword instructs Oracle 12c to include only unique numeric values in its calculation.
(True/False)
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Group functions can be nested inside single-row functions._________________________
(True/False)
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A grouping sets expression can perform multiple Group BY clauses in a single query.
(True/False)
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The ____________________ function is used to calculate the average of the numeric values in a specified column.
(Short Answer)
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If the DISTINCT keyword is not included in the VARIANCE function,the ____ keyword will be assumed.
(Multiple Choice)
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The STDVAR function is used to determine the standard deviation of numeric data.
(True/False)
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The ____________________ function is used to calculate the total amount stored in a numeric field for a group of records.
(Short Answer)
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A SELECT statement cannot include both a GROUP BY and an ORDER BY clause.
(True/False)
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Single-row functions return one result per group of rows processed._________________________
(True/False)
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The COUNT(*)function is only used to count the number of records containing NULL values.
(True/False)
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The COUNT(*)function can be used to count the number of rows containing NULL and non-NULL values._________________________
(True/False)
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The WHERE clause can contain group functions._________________________
(True/False)
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The MAX function can be used with the ____________________ keyword to ignore duplicate values.
(Short Answer)
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Columns used to group data in the GROUP BY clause do not have to be listed in the SELECT clause._________________________
(True/False)
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What clause offers many options to identify measures and patterns to analyze in a query?
(Multiple Choice)
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If a SELECT statement contains HAVING,GROUP BY,and WHERE clauses,the ____ clause will be processed first.
(Multiple Choice)
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