STRUCTURED QUERY LANGUAGE TEST

Progress

1.

Which of the following is not a database object?

2.

What is the main language of  Transact-SQL?

3.

Which is the subset of SQL command used to manipulate Database structures, including tables?

4.

Which one is not part of the Database backup file?

5.

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

6.

Which one is not used in SQL?

7.

Find all the cities whose humidity is 89

8.

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

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

9.

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;

10.

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

11.

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?

12.

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    

13.

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

14.

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

15.

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

16.

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;  

17.

Select ________ dept_name from instructor; 

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

18.

You can delete a view with _____________ Command.

19.

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

20.

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?

21.

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''?

22.

The HAVING clause does which of the following?

23.

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

24.

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

25.

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

26.

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          

27.

 Syntax for create a  views is _______

28.

Which of the SQL statement is correct?

29.

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    

30.

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

31.

Where subqueries can not be used?

32.

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

33.

Can you validate the statement?

An ORDER BY can be used in a subquery.

True or False?

34.

Which of the following statements are TRUE regarding subqueries?

35.

Which of the following is true about sub-queries?

36.

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

37.

By default, which key creates Clustered index?

38.

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

39.

Can you validate the statement?

A column with a Primary key has a Null value.

True or False?

40.

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

41.

Choose the query that matches the above image.

42.

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? 

43.

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

44.

What is the function of Full Outer Join in SQL?

45.

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

46.

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

 

47.

What is the syntax for joining two tables? Pick Two

48.

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

49.

Where are Joins used?

50.

Which type of join is not desirable for retrieval?

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.

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

 

53.

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

 

54.

The _____ aggregation operation adds up all the values of the attribute

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 SQL keyword is used to retrieve the highest value? 

58.

In SQL - these functions - AVG, MIN, MAX, COUNT are called as ___________

59.

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';

 

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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