SQL | Structured Query Language Test

Which file type is used for database backup?

Which one is not part of the Database backup file?

What does a DML Stand for?

The result of a SQL SELECT statement is a ______.

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

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

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?

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

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

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

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

Which one is not used in SQL?

Find all the cities whose humidity is 89

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

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

Can you validate the statement?

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

True or False?

Which of the SQL statement is correct?

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;

The HAVING clause does which of the following?

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

SELECT emp_id, fname, lname

FROM person

ORDER BY emp_id;

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

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

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

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

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

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;

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

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

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;

The SQL WHERE clause used for

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

Can you validate the statement?

A subquery can be used anywhere an expression is allowed.

True or False?

A subquery in an SQL SELECT statement is enclosed in

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

Which of the following statements are TRUE regarding subqueries?

Which of the following is correct DROP INDEX Command?

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

Can you validate the statement?

A table contains more than one foreign key

True or False?

Does an Index help to speed up?

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

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

How many tables may include with a join?

Can you validate the statement?

Alias is used in Joins.

True or False?

Choose the correct query for the below scenario.

List all orders, showing order number, customer name and credit limit of a customer.

Orders Table:

Order_Number, Customer, Product_Amount

Customers Table:

Customer_Number, Customer_Name, Credit_Limit

Which of the below query satisfy the above question?

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

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

What are the joins available in SQL?

Choose the query that matches the above image.

What is the function of Full Outer Join in SQL?

What values does the count(*) function ignore?

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

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT SUM(Salary) from Salesemployee

where Name = 'Tom';

Which of the following is incorrect SQL?

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT Count(Salary) from Salesemployee

where name Like 'T%';

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT Max(Salary) from Salesemployee

WHERE Gender = 'Male';

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT Count(*) from Salesemployee

WHERE Gender = 'Male';

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

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT AVG(Salary) from Salesemployee

where Dept = ' HR';

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

STRUCTURED QUERY LANGUAGE TEST

Which file type is used for database backup?

Which one is not part of the Database backup file?

What does a DML Stand for?

The result of a SQL SELECT statement is a ______.

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

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

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?

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

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

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

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

Which one is not used in SQL?

Find all the cities whose humidity is 89

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

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

Can you validate the statement? "ORDER BY" can only be used by WHERE Clause. True or False?

Which of the SQL statement is correct?

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;

The HAVING clause does which of the following?

What is the significance of “ORDER BY” in the following MySQL statement? SELECT emp_id, fname, lname FROM person ORDER BY emp_id;

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

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

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

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

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

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;

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

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

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;

The SQL WHERE clause used for

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

Can you validate the statement? A subquery can be used anywhere an expression is allowed. True or False?

A subquery in an SQL SELECT statement is enclosed in

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

Which of the following statements are TRUE regarding subqueries?

Which of the following is correct DROP INDEX Command?

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

Can you validate the statement? A table contains more than one foreign key True or False?

Does an Index help to speed up?

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

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

How many tables may include with a join?

Can you validate the statement? Alias is used in Joins. True or False?

Choose the correct query for the below scenario.

List all orders, showing order number, customer name and credit limit of a customer. Orders Table: Order_Number, Customer, Product_Amount Customers Table: Customer_Number, Customer_Name, Credit_Limit Which of the below query satisfy the above question?

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

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

What are the joins available in SQL?

Choose the query that matches the above image.

What is the function of Full Outer Join in SQL?

What values does the count(*) function ignore?

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

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

Which of the following is incorrect SQL?

Use below table (Salesemployee) and answer the following question What is the output of following query ? SELECT Count(Salary) from Salesemployee where name Like 'T%';

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

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

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

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

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

Assessment complete! Thank you for you time. We are redirecting you to the result page, Please click on 'SUBMIT'

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

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?

Can you validate the statement?

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

True or False?

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;

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

SELECT emp_id, fname, lname

FROM person

ORDER BY emp_id;

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

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

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;

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

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;

Can you validate the statement?

A subquery can be used anywhere an expression is allowed.

True or False?

Can you validate the statement?

A table contains more than one foreign key

True or False?

Can you validate the statement?

Alias is used in Joins.

True or False?

List all orders, showing order number, customer name and credit limit of a customer.

Orders Table:

Order_Number, Customer, Product_Amount

Customers Table:

Customer_Number, Customer_Name, Credit_Limit

Which of the below query satisfy the above question?

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT SUM(Salary) from Salesemployee

where Name = 'Tom';

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT Count(Salary) from Salesemployee

where name Like 'T%';

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT Max(Salary) from Salesemployee

WHERE Gender = 'Male';

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT Count(*) from Salesemployee

WHERE Gender = 'Male';

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT AVG(Salary) from Salesemployee

where Dept = ' HR';

Assessment complete! Thank you for you time.
We are redirecting you to the result page, Please click on 'SUBMIT'

1.

BAK
TXT
XML
XLSX

2.

Full
Differential
Transaction log
Backup log

3.

Different Mode Level
Data Model Language
Data Mode Lane
Data Manipulation Language

4.

File
Report
Table
Form

5.

Data Definition Language
Data Manipulation Language
Both of above
None of the above

6.

Aggregation of the field “name” of both table
Aggregation of the field “name” of table “department”
Sorting of the field “name”
None of the mentioned

7.

Salary*1.1
ID
Where
Instructor

8.

select job, avg(sal) "Average Salary" from emp where job in('MANAGER','ANALYST') group by job having avg(sal)>=1500;
select job, avg(sal) "Average Salary" from emp where job in('MANAGER','ANALYST') group by job having avg(sal)>1500;
select job, avg(sal) "Average Salary" from emp where job in('MANAGER') group by job having avg(sal)>1500;
select job, sum(sal) "Average Salary" from emp where job in('MANAGER','ANALYST') order by job having avg(sal)>1500;

9.

ASC
DESC
Order by Randomly
No output

10.

To filter out the row values
To filter out the column values
To filter out the row and column values
None of the mentioned

11.

DROP INDEX idx_pname;
DROP INDEX index_name from Person;
ALTER TABLE Person DROP INDEX idx_pname;
Cannot drop Index from table

12.

Create Table
Create Index
Create Unique Index
Create Table Column

13.

Select city where humidity = 89;
Select city from weather where humidity = 89;
Select humidity = 89 from weather;
Select city from Weather;

14.

It is used to delete a table.
You cannot rollback data.
It is a DML command.
It is used to delete a row in a table.

15.

CREATE
UPDATE
ALTER
SELECT

16.

TRUE
FALSE

17.

Select Username AND Password FROM Users;
Select Username, Password FROM Users;
Select Username, Password Where Username = 'user1';
None of these

18.

{-3, -2, -1, 1, 2, 3}
{-1, 1, -2, 2, -3, 3}
{1, 2, 3, -1, -2, -3}
None of the mentioned

19.

Acts like a WHERE clause but is used for groups rather than rows.
Acts like a WHERE clause but is used for rows rather than columns.
Acts like a WHERE clause but is used for columns rather than groups.
Acts EXACTLY like a WHERE clause.

20.

Data of lname will be sorted
Data of emp_id will be sorted in descending order
Data of emp_id will be sorted in ascending order
All of the mentioned

21.

Filter out all rows whose total emp_id below 2
Delete the rows whose total emp_id>2
Filter out or select all rows whose total emp_id below 2
None of the mentioned

22.

The query is syntactically correct but gives the wrong answer
The query is syntactically wrong
The query is syntactically correct and gives the correct answer
The query contains one or more wrongly named clauses.

23.

Select name from staffinfo where salary BETWEEN 10000 AND 25000;
Select name from staffinfo where salary IN 10000 AND 25000;
Both A and B
None of the above

24.

Sorting your result
Aggregation of fields
Conditions in SQL
None of the mentioned

25.

CREATE INDEX idx_pname ON Person (LastName, FirstName);
CREATE INDEX idx_pname ON Person;
CREATE INDEX idx_pname ON Person (FirstName, LastName);
CREATE INDEX idx_pname Using (LastName, FirstName) ON Persons

26.

TRUE
FALSE

27.

Condition that is to be met for the rows to be returned from result.
Boolean Condition only
Text condition only
None of the above

28.

Where, from
From, select
Select, from
From, where

29.

TRUE
FALSE

30.

limits the column data that are returned.
limits the row data are returned.
Both A and B are correct.
Neither A nor B are correct.

31.

AND, OR
< , > >, <>

32.

TRUE
FALSE

33.

Parenthesis -- (…).
Brackets -- […].
Capital Letters.
Braces--{…}.

34.

IN
ANY
ALL
All of the above

35.

A subquery can retrieve zero or more rows
A subquery can appear on either side of a comparison operator
There is no limit on the number of subquery levels in the WHERE clause of a SELECT statement
Both A and B

36.

DROP INDEX table_name;
DROP INDEX index_name;
DROP INDEX index_name or table_name;
DELETE INDEX index_name;

37.

Implicit
Unique
single-column
Composite

38.

TRUE
FALSE

39.

SELECT queries
WHERE clauses
Both A and B
UPDATE Query

40.

Candidate Key
Sub Key
Super Key
Foreign Key

41.

SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate FROM Orders LEFT OUTER JOIN Customers ON Orders.CustomerID=Customers.CustomerID;
SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate FROM Orders INNER JOIN Customers ON Orders.CustomerID=Customers.CustomerID;
SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate FROM Orders RIGHT OUTER JOIN Customers ON Orders.CustomerID=Customers.CustomerID;
SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate FROM Orders ADD Customers ON Orders.CustomerID=Customers.CustomerID;

42.

0
1
2
More than 1

43.

TRUE
FALSE

44.

SELECT * FROM employees RIGHT departments ON employees.department_id = departments.department_id;
SELECT * FROM employees LEFT departments ON employees.department_id = departments.department_id;
SELECT * FROM employees JOIN departments ON employees.department_id = departments.department_id;
SELECT * FROM employee JOIN department ON employee.department_id = department.department_id;

45.

Select Order_Numer, Customer_Name, Credit_Limit from Customers, Orders where Customer = Customer_Number;
Select Order_Numer, Customer_Name, Credit_Limit from Customers INNER JOIN Orders ON Customers.Customer_Number = Orders.Customer;;
Both
None

46.

The tables being joined have NOT NULL columns.
The tables being joined have both matched and unmatched data.
The columns being joined have NULL values.
The tables being joined have only unmatched data.

47.

SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate FROM Orders INNER JOIN Customers ON Orders.CustomerID=Customers.CustomerID;
SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate FROM Orders LEFT OUTER JOIN Customers ON Orders.CustomerID=Customers.CustomerID;
SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate FROM Orders RIGHT OUTER JOIN Customers ON Orders.CustomerID=Customers.CustomerID;
SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate FROM Orders FULLY OUTER Customers ON Orders.CustomerID=Customers.CustomerID;

48.

Inner, Outer, Self
Left,Middle, Half
None of above
Both A and B

49.

Select [List] from [Table A] A inner join [Table B] B on A.value=B.value
Select [List] from [Table A] A full outer join [Table B] B on A.value=B.value where A.value is null or B.value is null
Select [List] from [Table A] A right join [Table B] B on A.value=B.value where A.value is null
Select [List] from [Table A] A full outer join [Table B] B on A.value=B.value

50.

Matches rows from two tables based on the values in common columns from each table
It includes all rows from the joined tables whether or not the other table has the matching row.Includes unmatched rows from one table and match rows from two tables based on the values in common columns from each table .
Includes unmatched rows from one table and match rows from two tables based on the values in common columns from each table
None of the above

51.

Repetitive values
Null values
Characters
Integers

52.

COUNT, MAX, AVG, SUM
MAX, AVG, SUM, SELECT
UNION, COUNT, MIN, DESC
AVG, MIN, MAX, ASC

53.

1000
500
2500
3000

54.

Select max(Marks) from student;
Select sum(Marks) from student;
Select max(Marks1+Marks2) from student;
Select max(Marks1, Marks2) from student;

55.

3
5
1
4

56.

1000
1500
500
200

57.

8
4
5
3

58.

Aggregate function
Adjunct function
Set Operation
Scalar Operation

59.

1067
500
2500
1064

60.

Data types
Primary keys
Default values
All of the above

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

SELECT Name, Age, Firstname, Lastname
FROM EMPLOYEE
GROUP BY NAME, SALARY;

Customers Table:
Customer_Number, Customer_Name, Credit_Limit

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

SELECT Count(Salary) from Salesemployee
where name Like 'T%';

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

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

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

SELECT branch_name, COUNT (DISTINCT customer_name)

FROM depositor, account

WHERE depositor.account_number = account.account_number

GROUP BY branch_id