STRUCTURED QUERY LANGUAGE TEST

Progress

1.

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

2.

Which of the following database cannot be dropped?

3.

Which file type is used for database backup?

4.

To delete the database __________ Command is used

5.

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

6.

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

7.

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

8.

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          

9.

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

10.

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?

11.

Find all the cities whose humidity is 89

12.

The HAVING clause does which of the following?

13.

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;  

14.

Which one is not used in SQL?

15.

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

16.

Select ________ dept_name from instructor; 

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

17.

Which of the SQL statement is correct?

18.

You can delete a view with _____________ Command.

19.

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

20.

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

21.

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;

22.

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''?

23.

Find the names of the countries whose condition is sunny

24.

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'

25.

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?

26.

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    

27.

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

28.

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

29.

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

30.

 Syntax for create a  views is _______

31.

Can you validate the statement?

A subquery can be used anywhere an expression is allowed.

True or False?

32.

Which of the following statement(s) is TRUE regarding subqueries?

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.

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

36.

How many Primary Keys can have in a table?

37.

Which key accepts multiple NULL values?

38.

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

39.

By default, which key creates Clustered index?

40.

Can you validate the statement?

We can use the index on columns that contain a high number of NULL values.

True or False?

41.

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

42.

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

 

43.

Evaluate this SQL statement:

SELECT employee_id, e.department_id, department_name, salary
FROM employees e, departments d  
WHERE e.department_id = d.department_id;  

Which SQL statement is equivalent to the above SQL statement? 

44.

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

45.

Can you validate the statement?

Alias is used in Joins.

True or False?

46.

How many tables may include with a join? 

47.

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

48.

What is the syntax for joining two tables? Pick Two

49.

Where are Joins used?

50.

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

51.

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';      
        

52.

The SQL Statement

SELECT ROUND(45.926, -1) FROM DUAL;

53.

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

 

54.

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 ;    

 

55.

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%';

 

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 = 'Sales';

 

57.

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%' and Dept ='HR';

 

58.

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' ;

 

59.

Use below table (Salesemployee) and answer the following question
What is the output of following query ?
SELECT Count(*) from Salesemployee 
WHERE Salary >500;  

 

60.

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

 

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