Consider the following Relation instance of Students: ID firstNamelastName GPA Address 123 Albertson Albertson 3.5 888 CDN 234 Mary Albertson 4.2 759 St. Catherine Est. 345 Smith Smith 2.9 105 Queen Mary 456 Theodore McDonald 3.7 208 Jean Talon West 567 Jean Mary 3.9 950 Des Laurentides 678 Junior Junior 4.1 326 St. Martin West How many records will be in the result of the following SQL Query? Select ID, firstName From Students S Where firstName = lastName and firstName NOT IN ( Select lastName From Students Where ID <> S.ID); Answer:

Consider the following Relation instance of Students: ID firstNamelastName GPA Address 123 Albertson Albertson 3.5 888 CDN 234 Mary Albertson 4.2 759 St. Catherine Est. 345 Smith Smith 2.9 105 Queen Mary 456 Theodore McDonald 3.7 208 Jean Talon West 567 Jean Mary 3.9 950 Des Laurentides 678 Junior Junior 4.1 326 St. Martin West How many records will be in the result of the following SQL Query? Select ID, firstName From Students S Where firstName = lastName and firstName NOT IN ( Select lastName From Students Where ID <> S.ID); Answer:

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

11
of 40
Consider the following Relation instance of Students:
ID
firstNamelastName GPA Address
123 Albertson Albertson 3.5 888 CDN
234 Mary
Albertson 4.2
759 St. Catherine Est.
345 Smith
Smith
2.9
105 Queen Mary
456 Theodore McDonald 3.7 208 Jean Talon West
567 Jean
Mary
3.9
950 Des Laurentides
678 Junior
Junior
4.1
326 St. Martin West
How many records will be in the result of the following SQL Query?
Select ID, firstName
From Students S
Where firstName = lastName and
firstName NOT IN ( Select lastName
From Students
Where ID <> S.ID);
Answer:

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