STRUCTURED QUERY LANGUAGE TEST

Progress

1.

 Which of the following is the original purpose of SQL?

2.

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

3.

Which of the following is not a database object?

4.

Which of the following is a valid SQL type?

5.

Which file type is used for database backup?

6.

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

7.

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?

8.

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

9.

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''?

10.

Which of the following query is correct for selecting the name of the staff from ''staffinfo'' table where salary is 10000 or 25000?

11.

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

12.

Find the names of the countries whose condition is sunny

13.

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

14.

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;

15.

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

16.

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          

17.

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

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

18.

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

19.

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

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.

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;

22.

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

23.

 Syntax for create a  views is _______

24.

Can you validate the statement?

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

True or False?

25.

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

26.

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

27.

Find all the cities whose humidity is 89

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.

You can delete a view with _____________ Command.

30.

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

31.

Which of the following is true about sub-queries?

32.

Which of the following statements are TRUE regarding subqueries?

33.

Where subqueries can not be used?

34.

What is "Subquery"?

35.

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

36.

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

37.

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

38.

Which of the following is correct DROP INDEX Command?

39.

Can you validate the statement?

A table contains more than one foreign key

True or False?

40.

By default, which key creates Clustered index?

41.

What is the function of Full Outer Join in SQL?

42.

Which type of join is not desirable for retrieval?

43.

How many tables may include with a join? 

44.

What is the syntax for joining two tables? Pick Two

45.

Below image depicts:

46.

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

47.

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

Which Join?

48.

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

 

49.

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? 

50.

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?

51.

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

 

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.

Which of the following is incorrect SQL?

54.

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

55.

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 ;  

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.

Use below table (Salesemployee) and answer the following question
What is the output of following query ?
SELECT Count(Salary) from Salesemployee 
where name Like 'T%';  

 

58.

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

59.

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

 

60.

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

 

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