A Guide to SQL
9th Edition
ISBN: 9781111527273
Author: Philip J. Pratt
Publisher: Course Technology Ptr
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Concept explainers
Question
Chapter 4, Problem 10RQ
Program Plan Intro
“ORDER BY” Clause:
- User can sort the data in specific order using “ORDER BY” clause.
- The column on which to sort data is called a sort key or a simple key.
- To sort the output, use an “ORDER BY” clause followed by the sort key.
- If the user does not specify a sort order, the output displayed in default order that is ascending order.
Example:
The example for “ORDER BY” clause is given below:
SELECT STUDENT_ID, STUDENT_NAME, STUDENT_CREDIT FROM STUDENT ORDER BY STUDENT_CREDIT;
Explanation:
The above query is used to list student ID, name and credit for each student with ascending order of student credit using an “ORDER BY” clause.
- From the given query, the sort key is “STUDENT_CREDIT”. So, the rows are sorted in ascending order by “STUDENT_CREDIT”.
Explanation of Solution
Most important key:
- The more important column is called the most important key.
- It is also called as the major sort key or the primary sort key.
Example:
The example for most important key is given below:
SELECT STUDENT_ID, STUDENT_NAME, STUDENT_CREDIT FROM STUDENT ORDER B...
Explanation of Solution
Less important key:
- The less important column is called the most important key.
- It is also called as the minor sort key or the secondary sort key.
Example:
The example for less important key is given below:
SELECT STUDENT_ID, STUDENT_NAME, STUDENT_CREDIT FROM STUDENT ORDER...
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Chapter 4 Solutions
A Guide to SQL
Ch. 4 - Prob. 1RQCh. 4 - Prob. 2RQCh. 4 - Prob. 3RQCh. 4 - Prob. 4RQCh. 4 - Prob. 5RQCh. 4 - In which clause would you use a wildcard in a...Ch. 4 - Prob. 7RQCh. 4 - How do you determine whether a column contains one...Ch. 4 - Prob. 9RQCh. 4 - Prob. 10RQ
Ch. 4 - Prob. 11RQCh. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 - Prob. 14RQCh. 4 - Prob. 15RQCh. 4 - Prob. 16RQCh. 4 - How do you find rows in which a particular column...Ch. 4 - Use the Internet to research the SQL [charlist]...Ch. 4 - Prob. 1TDCh. 4 - Prob. 2TDCh. 4 - Prob. 3TDCh. 4 - Prob. 4TDCh. 4 - Prob. 5TDCh. 4 - Prob. 6TDCh. 4 - Prob. 7TDCh. 4 - Prob. 8TDCh. 4 - Prob. 9TDCh. 4 - Prob. 10TDCh. 4 - Prob. 11TDCh. 4 - Prob. 12TDCh. 4 - Prob. 13TDCh. 4 - Prob. 14TDCh. 4 - Prob. 15TDCh. 4 - Prob. 16TDCh. 4 - What is the price of the least expensive item in...Ch. 4 - Prob. 18TDCh. 4 - Prob. 19TDCh. 4 - Prob. 20TDCh. 4 - Prob. 21TDCh. 4 - Prob. 22TDCh. 4 - Prob. 23TDCh. 4 - Prob. 1CATCh. 4 - Prob. 2CATCh. 4 - Prob. 3CATCh. 4 - Prob. 4CATCh. 4 - Prob. 5CATCh. 4 - Prob. 6CATCh. 4 - Prob. 7CATCh. 4 - Prob. 8CATCh. 4 - Prob. 9CATCh. 4 - Prob. 10CATCh. 4 - Prob. 11CATCh. 4 - Prob. 12CATCh. 4 - Prob. 13CATCh. 4 - Prob. 14CATCh. 4 - Prob. 15CATCh. 4 - Prob. 16CATCh. 4 - Prob. 17CATCh. 4 - Prob. 18CATCh. 4 - Prob. 19CATCh. 4 - List the reservation ID and trip ID for all trips...Ch. 4 - Prob. 1SCGCh. 4 - Prob. 2SCGCh. 4 - Prob. 3SCGCh. 4 - Prob. 4SCGCh. 4 - Prob. 5SCGCh. 4 - Prob. 6SCGCh. 4 - Prob. 7SCGCh. 4 - Prob. 8SCGCh. 4 - Prob. 9SCGCh. 4 - Prob. 10SCGCh. 4 - Prob. 11SCGCh. 4 - Prob. 12SCGCh. 4 - Prob. 13SCGCh. 4 - Prob. 14SCGCh. 4 - Prob. 15SCGCh. 4 - Prob. 16SCG
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