STRUCTURED QUERY LANGUAGE TEST

Progress

1.

To Create a new database __________ Command is used

2.

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

3.

Which of the following database cannot be dropped?

4.

 What does a  DML Stand for?

5.

Which file type is used for database backup?

6.

Can you validate the statement?

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

True or False?

7.

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

8.

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

9.

Find the names of the countries whose condition is sunny

10.

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

11.

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?

12.

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

13.

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

14.

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?

15.

Which one is not used in SQL?

16.

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

17.

The SQL WHERE clause used for 

18.

The HAVING clause does which of the following?

19.

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

20.

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;  

21.

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;

22.

 Syntax for create a  views is _______

23.

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

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.

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

26.

Find all the cities whose humidity is 89

27.

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'

28.

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;

29.

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

30.

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    

31.

Can you validate the statement?

An ORDER BY can be used in a subquery.

True or False?

32.

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

33.

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

34.

Where subqueries can not be used?

35.

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

36.

Can you validate the statement?

A column with a Unique key has duplicate values.

True or False?

37.

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

38.

Student (ID, Name, Dept_name, Total_credit)

In this above query which attribute form the Primary Key?

39.

Does an Index help to speed up?

40.

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

41.

Can you validate the statement?

Join is different from Inner join.

True or False?

42.

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

 

43.

How many tables may include with a join? 

44.

What are the joins available in SQL?

45.

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

46.

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

47.

Where are Joins used?

48.

What is the syntax for joining two tables? Pick Two

49.

Choose the query that matches the above image.

50.

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

51.

Use below table (Salesemployee) and answer the following question
What is the output of following query ?
SELECT MAX(Salary) from Salesemployee 
WHERE Salary >=2500 and Dept = 'Sales' ;

 

52.

Which SQL keyword is used to retrieve a maximum value?

53.

Which of the following is incorrect SQL?

54.

What values does the count(*) function ignore?

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 following query ?
SELECT Count(*) from Salesemployee 
WHERE Salary >=500 and Dept = 'Marketing';

 

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 'S%';

 

58.

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

 

59.

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

 

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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