2. 3. Which of the following is true of GROUP BY clauses? (Select all that apply.) a). GROUP BY clauses can contain multiple columns b). Every column in your select statement may/can be present in a group by clause, except for aggregated calculations c). NULLS will be grouped together if your Group By column contains NULLS Select the statements below that ARE NOT true of the ORDER BY clause (select all that apply). a). Can take the name of one or more columns b). Can be anywhere in the select statement c). It's only applied to the column names it directly precedes d). Cannot sort by a column not retrieved

2. 3. Which of the following is true of GROUP BY clauses? (Select all that apply.) a). GROUP BY clauses can contain multiple columns b). Every column in your select statement may/can be present in a group by clause, except for aggregated calculations c). NULLS will be grouped together if your Group By column contains NULLS Select the statements below that ARE NOT true of the ORDER BY clause (select all that apply). a). Can take the name of one or more columns b). Can be anywhere in the select statement c). It's only applied to the column names it directly precedes d). Cannot sort by a column not retrieved

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Payback Period

Payback period analysis is a method used to determine the relative time value of a project. It measures the time that a project will take to return its initial investment. The total time taken by the project to return the initial investment made for the project is called the payback period.

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Please answer question 2 and 3

2.
3.
Which of the following is true of GROUP BY clauses? (Select all that apply.)
a). GROUP BY clauses can contain multiple columns
b). Every column in your select statement may/can be present in a group by clause, except for aggregated calculations.
c). NULLs will be grouped together if your Group By column contains NULLS
Select the statements below that ARE NOT true of the ORDER BY clause (select all that apply).
a). Can take the name of one or more columns
b). Can be anywhere in the select statement
c). It's only applied to the column names it directly precedes
d). Cannot sort by a column not retrieved

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