STRUCTURED QUERY LANGUAGE TEST

Progress

1.

 Which of the following is the original purpose of SQL?

2.

What is the meaning of a Database?

3.

Which is the subset of SQL command used to manipulate Database structures, including tables?

4.

In SQL, which command is used to change a table's storage characteristics?

5.

What is the SQL query used to retrieve all the data from the customer table?

6.

The HAVING clause does which of the following?

7.

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

8.

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

9.

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

Select OrderID, Shipdate
From Orders  
Where CustomerID=20
Order by Shipdate;

10.

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

11.

 Syntax for create a  views is _______

12.

Select two options which do not belong to the Purpose of Delete

13.

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

14.

What is the significance of “ORDER BY” in the following MySQL statement?

SELECT emp_id, fname, lname  
FROM person    
ORDER BY emp_id;  

15.

Can you validate the statement?

"ORDER BY" can only be used by WHERE Clause.

True or False?

16.

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

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

17.

Which command is used to change the definition of a table in SQL ?

18.

You can delete a view with _____________ Command.

19.

The SQL WHERE clause used for 

20.

Which of the SQL statement is correct?

21.

Find the names of the countries whose condition is sunny

22.

Select ID, name, dept name, salary * 1.1 where instructor;

The query given below will not give an error. Which one of the following has to be replaced to get the desired output?

23.

Which one is not used in SQL?

24.

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    

25.

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;  

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.

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

28.

What is the significance of the statement “GROUP BY d.name” 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    

29.

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'

30.

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;

31.

Which of the following multi-row operators can be used with a sub-query?

32.

Which of the following statement(s) is TRUE regarding subqueries?

33.

Which of the following statements are TRUE regarding subqueries?

34.

Where subqueries can not be used?

35.

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

36.

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

37.

Can you validate the statement?

A column with a Primary key has a Null value.

True or False?

38.

Which one of the following can be taken as a Primary Key?

39.

Can you validate the statement?

We can use the index on columns that contain a high number of NULL values.

True or False?

40.

A ______ index is created based on only one table column.

41.

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

42.

What is the syntax for joining two tables? Pick Two

43.

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?

44.

Statement: Join for each row of one table to every row of another table.

Which Join?

45.

Choose the query that matches the above image.

46.

Choose the correct query for the below scenario.

 

47.

Evaluate this SQL statement:

SELECT employee_id, e.department_id, department_name, salary
FROM employees e, departments d  
WHERE e.department_id = d.department_id;  

Which SQL statement is equivalent to the above SQL statement? 

48.

Where are Joins used?

49.

Can you validate the statement?

Join is different from Inner join.

True or False?

50.

What is the function of Full Outer Join in SQL?

51.

Which SQL keyword is used to retrieve a maximum value?

52.

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

53.

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

 

54.

“COUNT” keyword belongs to which categories in MySQL?

55.

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';

 

56.

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

 

57.

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

 

58.

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 ;  

 

59.

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 ;  

 

60.

Use below table (Salesemployee)  and answer the following question

What is the output of the following query?

SELECT SUM(Salary) from Salesemployee     
WHERE Gender = 'Male';      
        

Assessment complete! Thank you for you time.
We are redirecting you to the result page, Please click on 'SUBMIT'