STRUCTURED QUERY LANGUAGE TEST

Progress

1.

SQL can be used to

2.

In SQL, which command is used to change a table's storage characteristics?

3.

 What does a  DML Stand for?

4.

Which of the following is a valid SQL type?

5.

What is the meaning of a Database?

6.

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

7.

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

8.

Can you validate the statement?

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

True or False?

9.

Find the names of the countries whose condition is sunny

10.

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

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

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.

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

13.

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

14.

You can delete a view with _____________ Command.

15.

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

16.

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;

17.

Analyze the following Query and Mark the answer whether it's the correct query or not ?

select deptName
from Employee
having avg (salary)
group by deptName
where sex = 'M'

18.

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

19.

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

20.

Which of the SQL statement is correct?

21.

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          

22.

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

23.

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

24.

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

25.

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

26.

The SQL WHERE clause used for 

27.

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    

28.

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

29.

 Syntax for create a  views is _______

30.

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?

31.

Can you validate the statement?

An ORDER BY can be used in a subquery.

True or False?

32.

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

33.

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

34.

What is "Subquery"?

35.

Where subqueries can not be used?

36.

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

37.

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

38.

Can you validate the statement?

A table contains more than one foreign key

True or False?

39.

Which key accepts multiple NULL values?

40.

Which of the following is correct DROP INDEX Command?

41.

Choose the correct query for the below scenario.

 

42.

What are the joins available in SQL?

43.

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

44.

Choose the query that matches the above image.

45.

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

46.

What is the syntax for joining two tables? Pick Two

47.

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

48.

What is the function of Full Outer Join in SQL?

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 Count(*) from Salesemployee 
WHERE Gender = 'Male';  

 

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 the following query?

SELECT SUM(Salary) from Salesemployee     
WHERE Gender = 'Male';      
        

54.

Which SQL keyword is used to retrieve a maximum value?

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 following query ?  
SELECT MIN(Salary) from Salesemployee   
WHERE Employee_ID % 2 != 0 ;    

 

57.

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' ;

 

58.

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

 

59.

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

 

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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