STRUCTURED QUERY LANGUAGE TEST

Progress

1.

What is the full form of SQL?

2.

Which of the following is a valid SQL type?

3.

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

4.

To Create a new database __________ Command is used

5.

Which file type is used for database backup?

6.

Select ________ dept_name from instructor; 

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

7.

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

8.

Find the names of the countries whose condition is sunny

9.

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;  

10.

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

11.

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    

12.

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

13.

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          

14.

Can you validate the statement?

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

True or False?

15.

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?

16.

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;

17.

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

18.

The HAVING clause does which of the following?

19.

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

20.

You can delete a view with _____________ Command.

21.

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

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

22.

Which one is not used in SQL?

23.

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

24.

Which of the SQL statement is correct?

25.

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''?

26.

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    

27.

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

28.

 Syntax for create a  views is _______

29.

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

30.

The SQL WHERE clause used for 

31.

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

32.

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

33.

Which of the following operators cannot be used in a sub-query?

34.

What is "Subquery"?

35.

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

36.

Student (ID, Name, Dept_name, Total_credit)

In this above query which attribute form the Primary Key?

37.

How many types of indexes are there in the SQL server?

38.

Can you validate the statement?

A column with a Unique key has duplicate values.

True or False?

39.

Can you validate the statement?

A column with a Primary key has a Null value.

True or False?

40.

Which of the following is correct DROP INDEX Command?

41.

Can you validate the statement?

Alias is used in Joins.

True or False?

42.

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

 

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.

What are the joins available in SQL?

45.

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

46.

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? 

47.

Choose the query that matches the above image.

48.

What is the syntax for joining two tables? Pick Two

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 Count(*) from Salesemployee 
WHERE Salary >500;  

 

52.

Which of the following is incorrect SQL?

53.

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%';  

 

54.

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 ;  

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 following query ?
SELECT AVG(Salary) from Salesemployee 
WHERE Gender = 'Female';  

 

57.

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';

 

58.

Which SQL keyword is used to retrieve a maximum value?

59.

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

60.

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%';

 

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