STRUCTURED QUERY LANGUAGE TEST

Progress

1.

Which of the following is a valid SQL type?

2.

SQL can be used to

3.

What is the full form of SQL?

4.

Which of the following is not a database object?

5.

Which one is not part of the Database backup file?

6.

 Syntax for create a  views is _______

7.

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

8.

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

9.

You can delete a view with _____________ Command.

10.

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

11.

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    

12.

Select ________ dept_name from instructor; 

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

13.

Find the names of the countries whose condition is sunny

14.

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

15.

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

16.

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?

17.

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

18.

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    

19.

Can you validate the statement?

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

True or False?

20.

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

21.

Which one is not used in SQL?

22.

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

23.

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?

24.

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;

25.

The SQL WHERE clause used for 

26.

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

27.

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

28.

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          

29.

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;

30.

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;  

31.

Can you validate the statement?

A subquery can be used anywhere an expression is allowed.

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.

A subquery in an SQL SELECT statement is enclosed in

35.

What is "Subquery"?

36.

Which key accepts multiple NULL values?

37.

Student (ID, Name, Dept_name, Total_credit)

In this above query which attribute form the Primary Key?

38.

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

39.

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

40.

Can you validate the statement?

A column with a Primary key has a Null value.

True or False?

41.

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?

42.

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

43.

Statement: Join for each row of one table to every row of another table.

Which Join?

44.

Choose the correct query for the below scenario.

 

45.

Choose the query that matches the above image.

46.

What is the syntax for joining two tables? Pick Two

47.

Below image depicts:

48.

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

 

49.

What are the joins available in SQL?

50.

What is the function of Full Outer Join in SQL?

51.

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';

 

52.

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%';

 

53.

Which SQL keyword is used to retrieve the highest value? 

54.

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

 

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 following query ?
SELECT Count(Salary) from Salesemployee 
where name Like 'T%';  

 

57.

What values does the count(*) function ignore?

58.

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';      
        

59.

“COUNT” keyword belongs to which categories in MySQL?

60.

Which of the following set of operations is a valid set of Aggregate operations in SQL?

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