Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 7RQ
When is it appropriate to use a column alias?
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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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- Create the following indexes: a. Create an index named TRIP_INDEX1 on the TRIP_NAME column in the TRIPtable. b. Create an index named TRIP_INDEX2 on the TYPE column in the TRIP table. c. Create an index named TRIP_INDEX3 on the LAST_NAME and FIRST_NAME columns in the CUSTOMER table.arrow_forwardPerform the following tasks: a. Create an index named ITEM_INDEX1 on the ITEM_NUM column in the ORDER_LINEtable. b. Create an index named ITEM_INDEX2 on the CATEGORY column in the ITEMtable. c. Create an index named ITEM_INDEX3 on the CATEGORY and STOREHOUSE columnsin the ITEM table. d. Create an index named ITEM_INDEX4 on the CATEGORY and STOREHOUSEcolumns in the ITEM table. List categories in descending order.arrow_forwardWhat is the maximum number of columns you can define as a primary key when using the column-level approach to creating a table? a. 0 b. 1 c. 30 d. 255arrow_forward
- Column name Datatype Description trainer_id Should increment what is the datatype and size?arrow_forwardWhen is it acceptable to manually create an index?arrow_forwardTable Products:- ID, Name, Price. Calculate a new column named Discounted_Price following these conditions:- $18 minus if the original Price is above $120. $10 if the original Price is between $70 and $120 Original price for all other cases. Filter products with a Discounted_Price greater than $95. display the ProductID, Product Name, Price, and Discounted Price.arrow_forward
- PROBLEM: Create a table named BOOK_STORES to include the columns listed in the following chart. Column Name Store_ID Name Contact Rep_ID Datatype NUMBER (8) VARCHAR2(30) VARCHAR2(30) VARCHAR2(5) Constraint Comments PRIMARY KEY column Should be UNIQUE and NOT NULL : INSTRUCTIONS: Submit the complete code on doc file, run and also submit the snapshot of the result. You can paste the screen shots(2) on a MS. Word doc.arrow_forwardThe INSERT statement needs to specify column names unless _____. -multiple rows are being inserted into the table with a single statement -only one row is being inserted into the table -the values are inserted in the same order as the table's columns -the values that are being inserted are for columns that are primary keysarrow_forwardIn which normal form no column should depend on other columns? You must select at least 1 choice O First normal form. O Second normal form. O Third normal form. O Fourth normal form O Fifth normal form.arrow_forward
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