STRUCTURED QUERY LANGUAGE TEST

Progress

1.

The result of a SQL SELECT statement is a ______.

2.

Which file type is used for database backup?

3.

To Create a new database __________ Command is used

4.

What is the main language of  Transact-SQL?

5.

Which of the following is not a database object?

6.

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?

7.

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;  

8.

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

9.

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;

10.

Find all the cities whose humidity is 89

11.

Select ID, GPA from student grades order by GPA ____________.

In order to give only 10 ranks, on the whole, we should use.

12.

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

13.

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

14.

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

15.

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          

16.

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    

17.

 Syntax for create a  views is _______

18.

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;

19.

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

20.

Which of the SQL statement is correct?

21.

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

22.

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

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

23.

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

24.

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

25.

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

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.

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;

28.

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

29.

Can you validate the statement?

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

True or False?

30.

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

31.

Can you validate the statement?

An ORDER BY can be used in a subquery.

True or False?

32.

Which of the following is true about sub-queries?

33.

A subquery in an SQL SELECT statement is enclosed in

34.

Can you validate the statement?

A subquery can be used anywhere an expression is allowed.

True or False?

35.

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

36.

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

37.

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

38.

Can you validate the statement?

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

True or False?

39.

How many Primary Keys can have in a table?

40.

Which of the following is correct DROP INDEX Command?

41.

How many tables may include with a join? 

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.

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

45.

Below image depicts:

46.

Choose the query that matches the above image.

47.

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

48.

What are the joins available in SQL?

49.

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

50.

What is the syntax for joining two tables? Pick 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.

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 ;  

 

53.

“COUNT” keyword belongs to which categories in MySQL?

54.

In SQL - these functions - AVG, MIN, MAX, COUNT are called as ___________

55.

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

 

56.

Which among the following belongs to an “aggregate function”?

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%';

 

58.

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

 

59.

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

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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