STRUCTURED QUERY LANGUAGE TEST

Progress

1.

 Which of the following is the original purpose of SQL?

2.

The result of a SQL SELECT statement is a ______.

3.

To delete the database __________ Command is used

4.

 What does a  DML Stand for?

5.

To Create a new database __________ Command is used

6.

You need to find out the names of all employees who belong to the same department as the employee 'Jessica Butcher' who is in department 100 and has an employee ID 40. Which of the following queries will be correct?

7.

Analyse the following Query and Mark the answer whether it's the correct query or not?

SELECT Name, Age, Firstname, Lastname
FROM EMPLOYEE     
GROUP BY NAME, SALARY;  

8.

Find the name of these cities with temperature and condition whose condition is neither sunny nor cloudy

9.

Find the names of the countries whose condition is sunny

10.

The HAVING clause does which of the following?

11.

Select ________ dept_name from instructor; 

Here which of the following displays the unique values of the column?

12.

You can delete a view with _____________ Command.

13.

The SQL WHERE clause used for 

14.

What is the meaning of the “ORDER BY” clause in MySQL?

15.

With SQL, how can you return all the records from a table named "Persons" sorted descending by "FirstName"?

16.

Select ID, GPA from student grades order by GPA ____________.

In order to give only 10 ranks, on the whole, we should use.

17.

Analyze the following Query and Mark the answer whether it's the correct query or not ?

select deptName
from Employee
having avg (salary)
group by deptName
where sex = 'M'

18.

How to create index idx_pname for multiple columns (Lastname, Firstname) in a Person table?

19.

If you don't specify ASC or DESC after a SQL ORDER BY clause, the following is used by default

20.

We can use one table to create another table using the below query. True or False ?

CREATE TABLE TestTable AS

SELECT customername, contactname

FROM customers;

21.

Which SQL keyword is used to sort the result-set?

22.

The _______ clause allows us to select only those rows in the result relation of the ____ clause that satisfy a specified predicate.

23.

Identify the average salary of the jobs 'MANAGER' and 'ANALYST'. Display job, average salary if the identified average salary is more than 1500.

24.

What is the significance of the statement of the below query?

SELECT branch_name, COUNT (DISTINCT customer_name)     
FROM depositor, account           
WHERE depositor.account_number = account.account_number   
GROUP BY branch_id          

25.

How to delete the Customer name of Alfreds Futterkiste (CustomerID is 1) from the Customers table?

26.

With SQL, how do you select all the records from a table named "Persons" where the value of the column "Firstname" ends with an ''a''?

27.

What can be the condition in the "WHERE" clause in a SQL query?

28.

If emp_id contains the following set {-1, -2, 2, 3, -3, 1}, what will be the output on the execution of the following MySQL statement?

SELECT emp_id
FROM person
ORDER BY emp_id;

29.

Which SQL Query is used for updating the ContactName in the Customers table?

30.

What is the significance of the statement “HAVING COUNT (emp_id)>2” in the following MySQL statement?

SELECT d.name, COUNT (emp_id) emp_no  
FROM department d INNER JOIN Employee e  
ON d.dept_id=e.emp_id      
GROUP BY d.name      
HAVING COUNT (emp_id)>2    

31.

Can you validate the statement?

An ORDER BY can be used in a subquery.

True or False?

32.

Where subqueries can not be used?

33.

Which of the following statements are TRUE regarding subqueries?

34.

Which of the following is true about sub-queries?

35.

Which of the following clause is mandatorily used in a sub-query?

36.

A Key which is a set of one or more columns that can identify a record uniquely is called?

37.

Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?

38.

Which of the following do you need to consider when you make a table in SQL?

39.

Which key accepts multiple NULL values?

40.

Which of the following is correct DROP INDEX Command?

41.

Analyze the following tables and output and choose the correct query to achieve the output.

 

42.

Below image depicts:

43.

What is the function of Full Outer Join in SQL?

44.

 In which two cases would you use an outer join? (Choose two.)

45.

Analyze the following tables and output and choose the correct query to achieve the output.

46.

Can you validate the statement?

Join is different from Inner join.

True or False?

47.

List all orders, showing order number, customer name and credit limit of a customer.

Orders Table:  
Order_Number, Customer, Product_Amount
Customers Table:  
Customer_Number, Customer_Name, Credit_Limit

 Which of the below query satisfy the above question?

48.

Choose the query that matches the above image.

49.

Analyze the following tables and output and choose the correct query to achieve the output.

50.

Analyze the following tables and output and choose the correct query to achieve the output.

51.

Which of the following do you need to consider when you make a table in SQL?

52.

Use below table (Salesemployee) and answer the following question
What is the output of following query ?
SELECT Count(Salary) from Salesemployee 
where name Like 'S%' and Dept ='HR';

 

53.

Use below table (Salesemployee) and answer the following question
What is the output of following query ?
SELECT MAX(Salary) from Salesemployee 
WHERE Employee_ID % 2 = 0 ;  

 

54.

Use below table (Salesemployee) and answer the following question
What is the output of following query ?
SELECT COUNT(*) from Salesemployee 
WHERE Employee_ID % 2 <> 0 ;  

 

55.

Use below table (Salesemployee) and answer the following question
What is the output of following query ?
SELECT Count(*) from Salesemployee 
WHERE Salary >=500 and Dept = 'Sales';

 

56.

Use below table (Salesemployee) and answer the following question
What is the output of following query ?
SELECT SUM(Salary) from Salesemployee ;

 

57.

Which among the following belongs to an “aggregate function”?

58.

Use below table (Salesemployee) and answer the following question
What is the output of following query ?
SELECT Count(*) from Salesemployee 
WHERE Salary >=500 and Dept = 'Marketing';

 

59.

Use below table (Salesemployee) and answer the following question
What is the output of following query ?
SELECT Max(Salary) from Salesemployee 
WHERE Gender = 'Male';  

 

60.

Use below table (Salesemployee) and answer the following question
What is the output of following query ?
SELECT MIN(Salary) from Salesemployee 
WHERE Employee_ID % 2 <> 0 ;  

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