Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > Consider a table employee (empId, name, depar...
Start Learning for Free
Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?
Q1 : Select e.empId
From employee
Where not exists
(Select * From employees Where s.department = "5" and s.salary > = e.salary)
From employee
Where not exists
(Select * From employees Where s.department = "5" and s.salary > = e.salary)
Q2 : Select e.empId
From employee
Where e.salary > Any
(Select distinct salary From employees Where s.department = "5")
From employee
Where e.salary > Any
(Select distinct salary From employees Where s.department = "5")
- a)Q1 is the correct query.
- b)Q2 is the correct query.
- c)Both Q1 and Q2 result in the same answer.
- d)Neither Q1 nor Q2 is the correct query.
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Consider a table employee (empId, name, department, salary) and the tw...
Understanding the Queries
To evaluate which query correctly finds employees earning more than anyone in department 5, let's analyze both Q1 and Q2.
Q1 Analysis
- **Syntax**:
sql
Select e.empId
From employee
Where not exists (
Select *
From employees
Where s.department = "5"
and s.salary >= e.salary
)
- **Logic**: This query checks for each employee if there exists any employee in department 5 whose salary is greater than or equal to that employee's salary. If such an employee exists, that employee is excluded from the result.
- **Outcome**: The result set includes employees whose salaries are strictly greater than all salaries in department 5, but the logic is not straightforward and can lead to confusion.
Q2 Analysis
- **Syntax**:
sql
Select e.empId
From employee
Where e.salary > Any (
Select distinct salary
From employees
Where s.department = "5"
)
- **Logic**: This query directly checks if an employee's salary is greater than any salary retrieved from department 5.
- **Outcome**: This will return employees whose salaries are higher than at least one employee's salary in department 5, aligning perfectly with the requirement of finding employees who earn more than "anyone" in that department.
Conclusion
- **Correctness**: Q2 correctly identifies employees earning more than at least one employee in department 5. Q1 may potentially include employees earning the same as the maximum salary in department 5 due to its not exists clause.
- Therefore, the correct answer is **option B**, indicating that Q2 is the accurate query for the stated requirement.
To evaluate which query correctly finds employees earning more than anyone in department 5, let's analyze both Q1 and Q2.
Q1 Analysis
- **Syntax**:
sql
Select e.empId
From employee
Where not exists (
Select *
From employees
Where s.department = "5"
and s.salary >= e.salary
)
- **Logic**: This query checks for each employee if there exists any employee in department 5 whose salary is greater than or equal to that employee's salary. If such an employee exists, that employee is excluded from the result.
- **Outcome**: The result set includes employees whose salaries are strictly greater than all salaries in department 5, but the logic is not straightforward and can lead to confusion.
Q2 Analysis
- **Syntax**:
sql
Select e.empId
From employee
Where e.salary > Any (
Select distinct salary
From employees
Where s.department = "5"
)
- **Logic**: This query directly checks if an employee's salary is greater than any salary retrieved from department 5.
- **Outcome**: This will return employees whose salaries are higher than at least one employee's salary in department 5, aligning perfectly with the requirement of finding employees who earn more than "anyone" in that department.
Conclusion
- **Correctness**: Q2 correctly identifies employees earning more than at least one employee in department 5. Q1 may potentially include employees earning the same as the maximum salary in department 5 due to its not exists clause.
- Therefore, the correct answer is **option B**, indicating that Q2 is the accurate query for the stated requirement.
Free Test
FREE
| Start Free Test |
Community Answer
Consider a table employee (empId, name, department, salary) and the tw...
First create a table like this:
create table employee(empID in(50), name varchar(50), department int(50), salary int(50));
insert into employee values (1, 'a', 4, 90);
insert into employee values (2, 'b', 5, 30);
insert into employee values (3, 'c', 5, 50);
insert into employee values (4, 'd', 5, 80);
insert into employee values (5, 'e', 7, 10);
Thus, according to the table:
Salary of an employee x in the output set > Salary of any one employee in department 5.
This will lead to answer (2) as Q2 is the correct query.
create table employee(empID in(50), name varchar(50), department int(50), salary int(50));
insert into employee values (1, 'a', 4, 90);
insert into employee values (2, 'b', 5, 30);
insert into employee values (3, 'c', 5, 50);
insert into employee values (4, 'd', 5, 80);
insert into employee values (5, 'e', 7, 10);
Thus, according to the table:
Salary of an employee x in the output set > Salary of any one employee in department 5.
This will lead to answer (2) as Q2 is the correct query.
Attention Computer Science Engineering (CSE) Students!
To make sure you are not studying endlessly, EduRev has designed Computer Science Engineering (CSE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Computer Science Engineering (CSE).
|
Explore Courses for Computer Science Engineering (CSE) exam
|
|
Similar Computer Science Engineering (CSE) Doubts
Top Courses for Computer Science Engineering (CSE)View all
Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer?
Question Description
Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer?.
Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Computer Science Engineering (CSE).
Download more important topics, notes, lectures and mock test series for Computer Science Engineering (CSE) Exam by signing up for free.
Here you can find the meaning of Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider a table employee (empId, name, department, salary) and the two queries Q1, Q2 below. Assuming that department 5 has more than one employee, and we want to find the number of employees who get higher salary than anyone in department 5, which of the following statements is TRUE for any arbitrary employee table?Q1 : Select e.empIdFrom employeeWhere not exists(Select * From employees Where s.department = "5" and s.salary > = e.salary)Q2 : Select e.empIdFrom employeeWhere e.salary > Any(Select distinct salary From employees Where s.department = "5")a)Q1 is the correct query.b)Q2 is the correct query.c)Both Q1 and Q2 result in the same answer.d)Neither Q1 nor Q2 is the correct query.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Computer Science Engineering (CSE) tests.
|
|
Explore Courses for Computer Science Engineering (CSE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup