STRUCTURED QUERY LANGUAGE TEST

Progress

1.

Which one is not part of the Database backup file?

2.

To Create a new database __________ Command is used

3.

Which of the following is a valid SQL type?

4.

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

5.

 What does a  DML Stand for?

6.

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

7.

The HAVING clause does which of the following?

8.

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

9.

What is the meaning of the “HAVING” clause in MySQL?

10.

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    

11.

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

12.

Which one is not used in SQL?

13.

Which of the SQL statement is correct?

14.

Can you validate the statement?

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

True or False?

15.

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;

16.

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

17.

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

18.

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

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

19.

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

20.

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    

21.

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

22.

The SQL WHERE clause used for 

23.

Select ________ dept_name from instructor; 

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

24.

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''?

25.

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

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

26.

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

27.

Which syntax is used for Drop Index (idx_pname) from the Person table in MYSQL?

28.

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

29.

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?

30.

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

31.

Which of the following is true about sub-queries?

32.

Can you validate the statement?

A subquery can be used anywhere an expression is allowed.

True or False?

33.

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

34.

Can you validate the statement?

An ORDER BY can be used in a subquery.

True or False?

35.

Which of the following statements are TRUE regarding subqueries?

36.

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

37.

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

38.

Can you validate the statement?

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

True or False?

39.

How many Primary Keys can have in a table?

40.

Which key accepts multiple NULL values?

41.

What is the function of Full Outer Join in SQL?

42.

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

 

43.

Can you validate the statement?

Alias is used in Joins.

True or False?

44.

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

Which Join?

45.

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?

46.

Can you validate the statement?

Join is different from Inner join.

True or False?

47.

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

48.

Choose the correct query for the below scenario.

 

49.

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

50.

In the absence of WHERE condition this JOIN will function like a _______.

51.

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 ;  

 

52.

Which SQL keyword is used to retrieve a maximum value?

53.

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

 

54.

Which SQL keyword is used to retrieve the highest value? 

55.

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 ;  

 

56.

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';      
        

57.

Which of the following set of operations is a valid set of Aggregate operations in SQL?

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 MIN(Salary) from Salesemployee   
WHERE Employee_ID % 2 != 0 ;    

 

60.

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

 

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