STRUCTURED QUERY LANGUAGE TEST

Progress

1.

Which file type is used for database backup?

2.

Which of the following database cannot be dropped?

3.

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

4.

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

5.

What is the main language of  Transact-SQL?

6.

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

7.

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;

8.

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

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

9.

Which of the SQL statement is correct?

10.

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;  

11.

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

12.

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

13.

The SQL WHERE clause used for 

14.

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

15.

You can delete a view with _____________ Command.

16.

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          

17.

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

18.

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?

19.

The HAVING clause does which of the following?

20.

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

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.

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;

23.

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

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

24.

Find the names of the countries whose condition is sunny

25.

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

26.

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

27.

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

28.

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

29.

Which one is not used in SQL?

30.

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

31.

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

32.

Which of the following statements are TRUE regarding subqueries?

33.

What is "Subquery"?

34.

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

35.

Can you validate the statement?

A subquery can be used anywhere an expression is allowed.

True or False?

36.

A ______ index is created based on only one table column.

37.

Can you validate the statement?

A column with a Primary key has a Null value.

True or False?

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 do you need to consider when you make a table in SQL?

40.

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

41.

Below image depicts:

42.

Where are Joins used?

43.

What is the function of Full Outer Join in SQL?

44.

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? 

45.

What are the joins available in SQL?

46.

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

47.

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

48.

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

49.

Which type of join is not desirable for retrieval?

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 SUM(Salary) from Salesemployee ;

 

52.

What values does the count(*) function ignore?

53.

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' ;

 

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(*) from Salesemployee 
WHERE Salary >=500 and Dept = 'Marketing';

 

56.

The SQL Statement

SELECT ROUND(45.926, -1) FROM DUAL;

57.

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

58.

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';

 

59.

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

 

60.

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

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