Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Chapter 2, Problem 9RQ
Explanation of Solution
Concatenation:
- Concatenation is defined as the method of combining the contents of two or more columns.
- In Oracle 12c, two vertical bars or pipes (| |) are used to concatenate the output of a query.
- On a keyboard, this symbol is present above the backslash (\)...
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Chapter 2 Solutions
Oracle 12c: SQL
Ch. 2 - Prob. 1RQCh. 2 - What are the two required clauses for a SELECT...Ch. 2 - What is the purpose of the SELECT statement?
Ch. 2 - What does an asterisk () in the SELECT clause of a...Ch. 2 - What is the purpose of a column alias?Ch. 2 - How do you indicate that a column alias should be...Ch. 2 - When is it appropriate to use a column alias?
Ch. 2 - What are the guidelines to keep in mind when using...Ch. 2 - Prob. 9RQCh. 2 - What is a NULL value?
Ch. 2 - Which of the following SELECT statements displays...Ch. 2 - Which clause is required in a SELECT...Ch. 2 - Which of the following is not a valid SELECT...Ch. 2 - Which of the following symbols represents...Ch. 2 - Prob. 5MCCh. 2 - Prob. 6MCCh. 2 - Which of the following is a valid SELECT...Ch. 2 - Which of the following symbols is used in a SELECT...Ch. 2 - Prob. 9MCCh. 2 - When must a comma be used in the SELECT clause of...Ch. 2 - Prob. 11MCCh. 2 - Which clause is not required in a SELECT...Ch. 2 - Which of the following lines of the SELECT...Ch. 2 - Which of the following lines of the SELECT...Ch. 2 - Which of the following lines of the SELECT...Ch. 2 - Which of the following lines of the SELECT...Ch. 2 - Which of the following lines of the SELECT...Ch. 2 - Which of the following lines of the SELECT...Ch. 2 - Which of the following lines of the SELECT...Ch. 2 - Which of the following lines of the SELECT...Ch. 2 - Prob. 1HOACh. 2 - Prob. 2HOACh. 2 - Prob. 3HOACh. 2 - Prob. 4HOACh. 2 - Prob. 5HOACh. 2 - Prob. 6HOACh. 2 - Prob. 7HOACh. 2 - Create a list of each book title stored in the...Ch. 2 - Prob. 9HOACh. 2 - List all information for each order item. Include...
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- In PL/SQL, how do you assign variables the same type as a column in the database?arrow_forwardSQL stands for _____. a. Select Query Language b. Semi-Quick Language c. Structured Quick Language d. Structured Query Languagearrow_forwardHow do you indicate that a column alias should be used?arrow_forward
- How does a parameter query differ from a select query?arrow_forwardIn SQL, you use the __ statement to retrieve the rows in a table. Question 7 options: SELECT FROM WHERE QUERYarrow_forwardIf a subquery is used in the FROM clause of a query, how are the subquery’s results referenced in other clauses of the query?arrow_forward
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