STRUCTURED QUERY LANGUAGE TEST

Progress

1.

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

2.

SQL can be used to

3.

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

4.

Which of the following is a valid SQL type?

5.

To Create a new database __________ Command is used

6.

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;

7.

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

8.

Find the names of the countries whose condition is sunny

9.

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;

10.

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

11.

The SQL WHERE clause used for 

12.

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

13.

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

14.

 Syntax for create a  views is _______

15.

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

16.

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?

17.

Which of the SQL statement is correct?

18.

Find all the cities whose humidity is 89

19.

Can you validate the statement?

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

True or False?

20.

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

21.

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    

22.

Which one is not used in SQL?

23.

Select ________ dept_name from instructor; 

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

24.

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

25.

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

26.

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;  

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 “ORDER BY” in the following MySQL statement?

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

29.

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          

30.

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

31.

A subquery in an SQL SELECT statement is enclosed in

32.

What is "Subquery"?

33.

Which of the following statements are TRUE regarding subqueries?

34.

Which of the following is true about sub-queries?

35.

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

36.

How many Primary Keys can have in a table?

37.

Which of the following is not a Key in SQL Server?

38.

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

39.

Can you validate the statement?

A column with a Unique key has duplicate values.

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.

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?

43.

Which type of join is not desirable for retrieval?

44.

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

45.

How many tables may include with a join? 

46.

What is the syntax for joining two tables? Pick Two

47.

Can you validate the statement?

Join is different from Inner join.

True or False?

48.

Choose the query that matches the above image.

49.

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

50.

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

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.

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

53.

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 ;  

 

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 = 'Sales';

 

55.

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

 

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 MIN(Salary) from Salesemployee   
WHERE Employee_ID % 2 != 0 ;    

 

58.

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

 

59.

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%';

 

60.

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

 

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