STRUCTURED QUERY LANGUAGE TEST

Progress

1.

To Create a new database __________ Command is used

2.

Which one is not part of the Database backup file?

3.

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

4.

Which file type is used for database backup?

5.

 What does a  DML Stand for?

6.

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

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

7.

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

8.

Which one is not used in SQL?

9.

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

10.

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

11.

Which of the SQL statement is correct?

12.

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

13.

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''?

14.

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          

15.

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;  

16.

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

17.

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    

18.

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'

19.

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;

20.

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

21.

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

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

22.

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

23.

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;

24.

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

25.

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?

26.

Select ________ dept_name from instructor; 

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

27.

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

28.

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

29.

The HAVING clause does which of the following?

30.

Find the names of the countries whose condition is sunny

31.

Can you validate the statement?

An ORDER BY can be used in a subquery.

True or False?

32.

What is "Subquery"?

33.

A subquery in an SQL SELECT statement is enclosed in

34.

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

35.

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

36.

Can you validate the statement?

A table contains more than one foreign key

True or False?

37.

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

38.

Does an Index help to speed up?

39.

Can you validate the statement?

A column with a Primary key has a Null value.

True or False?

40.

Student (ID, Name, Dept_name, Total_credit)

In this above query which attribute form the Primary Key?

41.

Can you validate the statement?

Alias is used in Joins.

True or False?

42.

What are the joins available in SQL?

43.

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? 

44.

What is the function of Full Outer Join in SQL?

45.

Which type of join is not desirable for retrieval?

46.

Choose the correct query for the below scenario.

 

47.

Below image depicts:

48.

Where are Joins used?

49.

What is the syntax for joining two tables? Pick Two

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 SUM(Salary) from Salesemployee ;

 

52.

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

 

53.

Which SQL keyword is used to retrieve a maximum value?

54.

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';

 

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.

Which SQL keyword is used to retrieve the highest value? 

57.

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

 

58.

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

 

59.

“COUNT” keyword belongs to which categories in MySQL?

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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