Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Question
Chapter 8, Problem 18RQ
Program Plan Intro
(a)
UNION set operator:
The UNION set operator is used to combine the output of two or more than two queries and produce a result. The produced result contains unique values.
Syntax:
QUERY UNION QUERY;
Consider two tables:
Table creation:
CREATE TABLE VENDOR(VEND_CODE INT PRIMARY KEY);
CREATE TABLE PRODUCT(PROD_CODE VARCHAR(5), VEND_CODE INT,FOREIGN KEY (VEND_CODE) REFERENCES VENDOR (VEND_CODE));
Inserting values:
INSERT INTO VENDOR VALUES(123);
INSERT INTO VENDOR VALUES(124);
INSERT INTO VENDOR VALUES(125);
INSERT INTO VENDOR VALUES(126);
INSERT INTO PRODUCT VALUES('ABC', 125);
INSERT INTO PRODUCT VALUES('DEF', 124);
INSERT INTO PRODUCT VALUES('GHI', 124);
INSERT INTO PRODUCT VALUES('JKL', 123);
Program Plan Intro
(b)
UNION ALL set operator:
The UNION ALL set operator is used to combine the output of two or more than two queries and produce a result. The produced result contains duplicate values.
Syntax:
QUERY UNION ALL QUERY;
Consider two tables:
Table creation:
CREATE TABLE VENDOR(VEND_CODE INT PRIMARY KEY);
CREATE TABLE PRODUCT(PROD_CODE VARCHAR(5), VEND_CODE INT,FOREIGN KEY (VEND_CODE) REFERENCES VENDOR (VEND_CODE));
Inserting values:
INSERT INTO VENDOR VALUES(123);
INSERT INTO VENDOR VALUES(124);
INSERT INTO VENDOR VALUES(125);
INSERT INTO VENDOR VALUES(126);
INSERT INTO PRODUCT VALUES('ABC', 125);
INSERT INTO PRODUCT VALUES('DEF', 124);
INSERT INTO PRODUCT VALUES('GHI', 124);
INSERT INTO PRODUCT VALUES('JKL', 123);
Program Plan Intro
(c)
INTERSECT set operator:
The INTERSECT set operator is used to combine the output of two or more than two queries and produce a result. The produced result contains the values (rows) that are common in both the tables.
Syntax:
QUERY INTERSECT QUERY;
Consider two tables:
Table creation:
CREATE TABLE VENDOR(VEND_CODE INT PRIMARY KEY);
CREATE TABLE PRODUCT(PROD_CODE VARCHAR(5), VEND_CODE INT,FOREIGN KEY (VEND_CODE) REFERENCES VENDOR (VEND_CODE));
Inserting values:
INSERT INTO VENDOR VALUES(123);
INSERT INTO VENDOR VALUES(124);
INSERT INTO VENDOR VALUES(125);
INSERT INTO VENDOR VALUES(126);
INSERT INTO PRODUCT VALUES('ABC', 125);
INSERT INTO PRODUCT VALUES('DEF', 124);
INSERT INTO PRODUCT VALUES('GHI', 124);
INSERT INTO PRODUCT VALUES('JKL', 123);
Program Plan Intro
(d)
EXCEPT/ MINUS set operator:
The MINUS set operator is used to combine the output of two or more than two queries and produce a result. The produced result contains the values (rows) that appear in the first table but not in the second table. The word “EXCEPT” can also be used in the place of “MINUS”.
Syntax:
QUERY EXCEPT QUERY;
Consider two tables:
Table creation:
CREATE TABLE VENDOR(VEND_CODE INT PRIMARY KEY);
CREATE TABLE PRODUCT(PROD_CODE VARCHAR(5), VEND_CODE INT,FOREIGN KEY (VEND_CODE) REFERENCES VENDOR (VEND_CODE));
Inserting values:
INSERT INTO VENDOR VALUES(123);
INSERT INTO VENDOR VALUES(124);
INSERT INTO VENDOR VALUES(125);
INSERT INTO VENDOR VALUES(126);
INSERT INTO PRODUCT VALUES('ABC', 125);
INSERT INTO PRODUCT VALUES('DEF', 124);
INSERT INTO PRODUCT VALUES('GHI', 124);
INSERT INTO PRODUCT VALUES('JKL', 123);
Expert Solution & Answer
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Chapter 8 Solutions
Database Systems: Design, Implementation, & Management
Ch. 8 - What is a cross join? Give an example of its...Ch. 8 - What three join types are included in the outer...Ch. 8 - Using tables named T1 and T2, write a query...Ch. 8 - Prob. 4RQCh. 8 - Prob. 5RQCh. 8 - Prob. 6RQCh. 8 - Prob. 7RQCh. 8 - What does it mean to say that SQL operators are...Ch. 8 - Prob. 9RQCh. 8 - Prob. 10RQ
Ch. 8 - Prob. 11RQCh. 8 - Prob. 12RQCh. 8 - Given the employee information in Question 11,...Ch. 8 - Prob. 14RQCh. 8 - Prob. 15RQCh. 8 - Prob. 16RQCh. 8 - What Oracle function should you use to calculate...Ch. 8 - Prob. 18RQCh. 8 - What string function should you use to list the...Ch. 8 - Prob. 20RQCh. 8 - Prob. 21RQCh. 8 - Prob. 22RQCh. 8 - Prob. 23RQCh. 8 - Prob. 24RQCh. 8 - Prob. 1PCh. 8 - Insert the data into the tables you created in...Ch. 8 - Prob. 3PCh. 8 - Prob. 4PCh. 8 - Prob. 5PCh. 8 - Prob. 6PCh. 8 - Prob. 7PCh. 8 - Prob. 8PCh. 8 - Prob. 9PCh. 8 - Modify the CUSTOMER table to include two new...Ch. 8 - Assuming that you completed Problem 10, write the...Ch. 8 - Assuming that the CUSTOMER table contains a...Ch. 8 - Write the query that lists the average age of your...Ch. 8 - Write the trigger to update the CUST_BALANCE in...Ch. 8 - Prob. 15PCh. 8 - Prob. 16PCh. 8 - Write a trigger to update the customer balance...Ch. 8 - Write a procedure to delete an invoice, giving the...Ch. 8 - Prob. 19PCh. 8 - Prob. 20PCh. 8 - Prob. 21PCh. 8 - Prob. 22PCh. 8 - Write a single SQL command to increase all price...Ch. 8 - Prob. 24PCh. 8 - Prob. 25PCh. 8 - Prob. 26PCh. 8 - Prob. 27PCh. 8 - Create a trigger named trg_line_total to write the...Ch. 8 - Create a trigger named trg_line_prod that...Ch. 8 - Create a stored procedure named prc_inv_amounts to...Ch. 8 - Create a procedure named prc_cus_balance_update...Ch. 8 - Modify the MODEL table to add the attribute and...Ch. 8 - Prob. 33PCh. 8 - Modify the CHARTER table to add the attributes...Ch. 8 - Write the sequence of commands required to update...Ch. 8 - Write the sequence of commands required to update...Ch. 8 - Write the command required to update the...Ch. 8 - Write the command required to update the...Ch. 8 - Write the command required to update the...Ch. 8 - Prob. 40PCh. 8 - Create a trigger named trg_char_hours that...Ch. 8 - Create a trigger named trg_pic_hours that...Ch. 8 - Create a trigger named trg_cust_balance that...Ch. 8 - Prob. 44PCh. 8 - Prob. 45PCh. 8 - Prob. 46PCh. 8 - Prob. 47PCh. 8 - Prob. 48PCh. 8 - Prob. 49PCh. 8 - Prob. 50PCh. 8 - Prob. 51PCh. 8 - Prob. 52PCh. 8 - Prob. 53PCh. 8 - Prob. 54PCh. 8 - Prob. 55PCh. 8 - Prob. 56PCh. 8 - Prob. 57PCh. 8 - Prob. 58PCh. 8 - Prob. 59PCh. 8 - Prob. 61PCh. 8 - Prob. 62PCh. 8 - Prob. 63PCh. 8 - Prob. 64PCh. 8 - Prob. 65PCh. 8 - Prob. 66PCh. 8 - Prob. 67PCh. 8 - Alter the DETAILRENTAL table to include a derived...Ch. 8 - Update the DETAILRENTAL table to set the values in...Ch. 8 - Alter the VIDEO table to include an attribute...Ch. 8 - Update the VID_STATUS attribute of the VIDEO table...Ch. 8 - Alter the PRICE table to include an attribute...Ch. 8 - Prob. 73CCh. 8 - Prob. 76C
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