STRUCTURED QUERY LANGUAGE TEST

Progress

1.

What is the full form of SQL?

2.

Which one is not part of the Database backup file?

3.

 What does a  DML Stand for?

4.

Which one is a non-relational database?

5.

What is the main language of  Transact-SQL?

6.

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'

7.

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

8.

The SQL WHERE clause used for 

9.

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          

10.

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

11.

Find the names of the countries whose condition is sunny

12.

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

13.

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

14.

Which one is not used in SQL?

15.

Select ________ dept_name from instructor; 

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

16.

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

17.

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''?

18.

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

19.

The HAVING clause does which of the following?

20.

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    

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.

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

23.

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

24.

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

25.

 Syntax for create a  views is _______

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.

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;

28.

Find all the cities whose humidity is 89

29.

You can delete a view with _____________ Command.

30.

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    

31.

Which of the following statements are TRUE regarding subqueries?

32.

Where subqueries can not be used?

33.

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

34.

Can you validate the statement?

An ORDER BY can be used in a subquery.

True or False?

35.

Which of the following is true about sub-queries?

36.

Can you validate the statement?

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

True or False?

37.

A Key which is a set of one or more columns that can identify a record uniquely is called?

38.

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

39.

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

40.

Which key accepts multiple NULL values?

41.

What is the syntax for joining two tables? Pick Two

42.

How many tables may include with a join? 

43.

Which type of join is not desirable for retrieval?

44.

What is the function of Full Outer Join in SQL?

45.

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

46.

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? 

47.

Choose the correct query for the below scenario.

 

48.

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

49.

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

 

50.

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

51.

Which of the following do you need to consider when you make a table in SQL?

52.

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 ;  

 

53.

“COUNT” keyword belongs to which categories in MySQL?

54.

Which of the following is incorrect SQL?

55.

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

 

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.

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

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(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 COUNT(*) from Salesemployee 
WHERE Employee_ID % 2 <> 0 ;  

 

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