STRUCTURED QUERY LANGUAGE TEST

Progress

1.

What is the meaning of a Database?

2.

 Which of the following is the original purpose of SQL?

3.

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

4.

SQL can be used to

5.

Which of the following is not a database object?

6.

Which one is not used in SQL?

7.

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

8.

Find all the cities whose humidity is 89

9.

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

10.

Can you validate the statement?

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

True or False?

11.

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''?

12.

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?

13.

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

14.

Which of the SQL statement is correct?

15.

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    

16.

 Syntax for create a  views is _______

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.

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

19.

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;  

20.

The SQL WHERE clause used for 

21.

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

22.

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

23.

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

24.

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

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

25.

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

26.

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

27.

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

28.

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

29.

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

30.

The HAVING clause does which of the following?

31.

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

32.

Which of the following is true about sub-queries?

33.

Which of the following statements are TRUE regarding subqueries?

34.

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

35.

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

36.

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

37.

Can you validate the statement?

A column with a Primary key has a Null value.

True or False?

38.

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

39.

By default, which key creates Clustered index?

40.

Student (ID, Name, Dept_name, Total_credit)

In this above query which attribute form the Primary Key?

41.

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

42.

Choose the correct query for the below scenario.

 

43.

How many tables may include with a join? 

44.

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?

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.

Choose the query that matches the above image.

48.

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

Which Join?

49.

What is the function of Full Outer Join in SQL?

50.

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

51.

Which SQL keyword is used to retrieve the highest value? 

52.

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

 

53.

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 ;  

54.

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 ;  

 

55.

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

 

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(*) from Salesemployee 
WHERE Salary >500;  

 

58.

The SQL Statement

SELECT ROUND(45.926, -1) FROM DUAL;

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 'T%';  

 

60.

What values does the count(*) function ignore?

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