STRUCTURED QUERY LANGUAGE TEST

Progress

1.

The result of a SQL SELECT statement is a ______.

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 of the following database cannot be dropped?

5.

Which one is not part of the Database backup file?

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.

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

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

8.

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

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.

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;  

11.

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

12.

Which of the SQL statement is correct?

13.

 Syntax for create a  views is _______

14.

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

15.

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''?

16.

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

17.

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;

18.

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

19.

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?

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.

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

22.

The SQL WHERE clause used for 

23.

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          

24.

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

25.

You can delete a view with _____________ Command.

26.

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

27.

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

28.

Find all the cities whose humidity is 89

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.

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    

31.

Which of the following is true about sub-queries?

32.

Can you validate the statement?

An ORDER BY can be used in a subquery.

True or False?

33.

A subquery in an SQL SELECT statement is enclosed in

34.

Can you validate the statement?

A subquery can be used anywhere an expression is allowed.

True or False?

35.

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

36.

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

37.

Which key accepts multiple NULL values?

38.

Which of the following is correct DROP INDEX Command?

39.

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

40.

Can you validate the statement?

A table contains more than one foreign key

True or False?

41.

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

42.

Choose the correct query for the below scenario.

 

43.

What is the function of Full Outer Join in SQL?

44.

Where are Joins used?

45.

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

46.

What is the syntax for joining two tables? Pick Two

47.

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?

48.

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

 

49.

How many tables may include with a join? 

50.

Can you validate the statement?

Alias is used in Joins.

True or False?

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.

What values does the count(*) function ignore?

53.

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' ;

 

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 MAX(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.

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

58.

Which SQL keyword is used to retrieve a maximum value?

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 Gender = 'Female';  

 

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