A Guide to SQL
9th Edition
ISBN: 9781111527273
Author: Philip J. Pratt
Publisher: Course Technology Ptr
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Question
Chapter 6, Problem 10SCG
Program Plan Intro
ALTER TABLE Statement:
- “ALTER TABLE” statement comes under Data Definition Language.
- It is used to modify column, add constraints, add column(s), drop column, rename column name and table name, drop constraints, and so on.
Syntax:
The Syntax to drop constraint is as follows:
ALTER TABLE table_Name ADD CONSTRAINT constraintName;
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Chapter 6 Solutions
A Guide to SQL
Ch. 6 - Prob. 1RQCh. 6 - Which command and clause adds an individual row to...Ch. 6 - How do you add data from an existing table to...Ch. 6 - Prob. 4RQCh. 6 - Which command removes rows from a table?Ch. 6 - Which command makes updates permanent?Ch. 6 - Which command reverses updates? Which updates are...Ch. 6 - Prob. 8RQCh. 6 - What is the format of the SET clause that changes...Ch. 6 - Which command and clause adds a column to an...
Ch. 6 - Prob. 11RQCh. 6 - Which command deletes a table and all its data?Ch. 6 - Prob. 13RQCh. 6 - Prob. 1TDCh. 6 - Prob. 2TDCh. 6 - Prob. 3TDCh. 6 - Prob. 4TDCh. 6 - Prob. 5TDCh. 6 - Prob. 6TDCh. 6 - In the NONGAME table, change the category for item...Ch. 6 - Prob. 8TDCh. 6 - Prob. 9TDCh. 6 - Prob. 10TDCh. 6 - Prob. 11TDCh. 6 - Use SQL to make the following changes to the...Ch. 6 - Prob. 2CATCh. 6 - Prob. 3CATCh. 6 - Prob. 4CATCh. 6 - Prob. 5CATCh. 6 - Prob. 6CATCh. 6 - Add to the PADDLING table a new character column...Ch. 6 - Prob. 8CATCh. 6 - Prob. 9CATCh. 6 - Prob. 10CATCh. 6 - Prob. 11CATCh. 6 - Prob. 12CATCh. 6 - Use SQL to make the following changes to the...Ch. 6 - Prob. 2SCGCh. 6 - Prob. 3SCGCh. 6 - Prob. 4SCGCh. 6 - Prob. 5SCGCh. 6 - Prob. 6SCGCh. 6 - Prob. 7SCGCh. 6 - Prob. 8SCGCh. 6 - Prob. 9SCGCh. 6 - Prob. 10SCGCh. 6 - Prob. 11SCGCh. 6 - Prob. 12SCG
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- Add a new row in the ORDERS table with the following data: Order# = 1021, Customer# = 1009, and Order date = July 20, 2009.arrow_forwardAdd a new row in the ORDERS table with the following data: Order# = 1022, Customer# = 2000, and Order date = August 6, 2009. Describe the error raised and what caused the error.arrow_forwardAdd a column named ON_HAND_VALUE to the NONCAT table. The on-hand value is a seven-digit number with two decimal places that represents the product of the number of units on hand and the price. Then set all values of ON_HAND_VALUE to ON_HAND * PRICE.arrow_forward
- Mark the BOOK_PRICING table's Category field as empty. Check to see whether the column is no longer accessible.arrow_forwardTask 2: Insert into the LARGE_PROPERTY table the office number, address, bedrooms, floors, monthly rent, and owner number from the PROPERTY table whose square footage is greater than 1,500 square feet.arrow_forwardAdd a column named ON_HAND_VALUE to the NONCAT table. The on-hand value is a seven-digit number with two decimal places that represent the product of the number of units on hand and the price. Then set all values of ON_HAND_VALUE to ON_HAND * PRICE.arrow_forward
- Modify the Job_class column of the EMPLOYEES table so that it allows storing a maximum width of two characters.arrow_forwardInsert a row into the LARGE_PROPERTY table for a new property. The office number is 1, The address is 2643 Lugsi Dr., The number of bedrooms is 3, The number of floors is 2, The monthly rent is $775, The owner number is MA111. Make sure to include the period (.) in the address.arrow_forwardAgain using the software.subscriptions table, pull all columns for premium_year subscriptions, regardless of the current status of each.arrow_forward
- Insert at least three rows into your EMPLOYEE_xx table. Use the next value of the sequence you created , EMPL_SEQUENCE_xx as the value for the employee ID for every row inserted. You may choose values for the other columns Test your constraint on the rate column by trying to update a row in the EMPLOYEE_xx table with the value of 6 used for the Pay Rate (you choose the row). Drop your EMPLOYEE_xx table and make sure it HAS been purged from the recyclebinarrow_forwardThe InstantRide Finance team also wants to analyze travels where more than the average discount rate is applied. They want to look for any correlation between higher discount amounts against other travel characteristics. You need to create a SELECT statement which is filtered with a subquery to calculate the AVG of the TRAVEL_DISCOUNT column.arrow_forwardAdd a new row in the ORDERS table with the following data: Order# = 1023 and Customer# = 1009. Describe the error raised and what caused the error.arrow_forward
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