SQL | Structured Query Language Test

1.

Which one is not part of the Database backup file?

Full
Differential
Transaction log
Backup log

2.

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

SELECT COLUMN FROM Customers;
SELECT All FROM Customers;
SELECT * FROM Customers;
SELECT All COLUMN FROM Customers;

3.

Which of the following is the original purpose of SQL?

To specify the syntax and semantics of SQL data definition language
To specify the syntax and semantics of SQL manipulation language
To define the data structures
All of the above

4.

What does a DML Stand for?

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

5.

What is the main language of Transact-SQL?

DDL
DML
DCL
None of the above

6.

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

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

7.

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

ORDER BY
SORT
ORDER
SORT BY

8.

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;

TRUE
FALSE

9.

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

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

10.

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'

TRUE
FALSE

11.

You can delete a view with _____________ Command.

DROP VIEW
DELETE VIEW
REMOVE VIEW
TRUNCATE VIEW

12.

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

DELETE FROM Customers where CustomerName = Alfreds Futterkiste AND CustomerID = 1
Delete Customers Where ContactName = 'Alfred Schmidt' WHERE CustomerID = 1;
Delete Customers Where ContactName = 'Alfred Schmidt'
Delete Customers SET CustomerName =

13.

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;

TRUE
FALSE

14.

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

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

15.

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

Select city, temperature, condition FROM weather Where condition NOT IN ('sunny', 'cloudy');
Select city, temperature, condition FROM weather Where condition NOT between ('sunny', 'cloudy');
Select city, temperature, condition FROM weather Where condition IN ('sunny', 'cloudy');
Select city, temperature, condition FROM weather Where condition between ('sunny', 'cloudy');

16.

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

CREATE
UPDATE
ALTER
SELECT

17.

The SQL WHERE clause used for

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.

18.

Find all the cities whose humidity is 89

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

19.

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;

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

20.

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

SELECT emp_id, fname, lname

FROM person

ORDER BY emp_id;

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.

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

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

Limit 10
Up to 10
Only 10
Max 10

22.

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

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

23.

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

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.

24.

Can you validate the statement?

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

True or False?

TRUE
FALSE

25.

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

Select * from Persons SORT BY "FirstName" DESC;
Select * from Persons SORT "FirstName" DESC;
Select * from Persons ORDER BY "FirstName" DESC;
Select * from Persons ORDER "FirstName" DESC;

26.

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

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

27.

Find the names of the countries whose condition is sunny

Select country from location where condition = 'sunny';
Select country from location where city IN (Select city from weather WHERE condition = 'sunny');
Select country from location where city NOT IN (SELECT city FROM weather WHERE condition = 'sunny');
SELECT country from location where city UNION (Select city from weather WHERE condition = 'sunny');

28.

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

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

29.

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

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

30.

Syntax for create a views is _______

CREATE VIEW View_name AS SELECT
CREATE VIEW View_name AS UPDATE
CREATE NEW VIEW View_name
CREATE VIEW View_name AS UPDATE

31.

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

SELECT
WHERE
ORDER BY
GROUP BY

32.

Which of the following statements are TRUE regarding subqueries?

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

33.

Which of the following is true about sub-queries?

They execute after the main query executes
They execute in parallel to the main query
The user can execute the main query and then, if wanted, execute the sub-query
They execute before the main query executes

34.

Can you validate the statement?

A subquery can be used anywhere an expression is allowed.

True or False?

TRUE
FALSE

35.

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

IN
ANY
ALL
All of the above

36.

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

Candidate Key
Sub Key
Super Key
Foreign Key

37.

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

Primary
Foreign
Alternate
Power

38.

Which key accepts multiple NULL values?

Foreign Key
Unique Key
Primary Key
None of the above

39.

Can you validate the statement?

A column with a Primary key has a Null value.

True or False?

TRUE
FALSE

40.

Does an Index help to speed up?

SELECT queries
WHERE clauses
Both A and B
UPDATE Query

41.

Can you validate the statement?

Join is different from Inner join.

True or False?

TRUE
FALSE

42.

Choose the correct query for the below scenario.

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;

43.

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

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;

44.

Statement: Join for each row of one table to every row of another table.

Which Join?

Inner
Cartesian
Outer
Left

45.

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

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.

46.

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

Inner
Cartesian
Outer
Left

47.

Where are Joins used?

To combine records from two or more tables in a database
Joins used in Data Definition Language
Joins used in aggregate function
SQL combines the result-set of two or more SELECT statements.

48.

How many tables may include with a join?

0
1
2
More than 1

49.

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

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;

50.

What is the syntax for joining two tables? Pick Two

SELECT Column Names FROM Table 1 JOIN Table 2 ON Condition JOIN Table 3 ON Condition
SELECT * FROM Table 1 JOIN Table 2 ON Condition JOIN Table 3 ON Condition
SELECT Column from Table 1 Join Table 2, Table 3 ON Condition
SELECT Column from Table 1 AND SELECT Column from Table 2

51.

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT Count(*) from Salesemployee

WHERE Gender = 'Male';

8
4
5
3

52.

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';

8
6
1
4

53.

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT SUM(Salary) from Salesemployee

where Name = 'Tom';

1000
500
2500
3000

54.

The SQL Statement

SELECT ROUND(45.926, -1) FROM DUAL;

Is illegal
Prints Garbage
Prints 045.925
Prints 50

55.

Use below table (Salesemployee) and answer the following question

What is the output of following query?

SELECT MIN(Salary) from Salesemployee

WHERE Gender = 'Female';

200
700
2000
2500

56.

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT SUM(Salary) from Salesemployee ;

5000
2500
4500
9400

57.

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT AVG(Salary) from Salesemployee

where Dept = ' HR';

1067
500
2500
1064

58.

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

add
avg
max
sum

59.

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

COUNT
UPPER
LOWER
All of the mentioned

60.

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT AVG(Salary) from Salesemployee

WHERE Gender = 'Female';

1175
1000
1350
2500

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

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 SUM(Salary) from Salesemployee
where Name = 'Tom';

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

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

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

STRUCTURED QUERY LANGUAGE TEST

Which one is not part of the Database backup file?

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

Which of the following is the original purpose of SQL?

What does a DML Stand for?

What is the main language of Transact-SQL?

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

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

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;

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

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'

You can delete a view with _____________ Command.

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

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;

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

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

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

The SQL WHERE clause used for

Find all the cities whose humidity is 89

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;

Select ID, GPA from student grades order by GPA ____________. In order to give only 10 ranks, on the whole, we should use.

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

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

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

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

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

Find the names of the countries whose condition is sunny

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

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

Syntax for create a views is _______

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

Which of the following statements are TRUE regarding subqueries?

Which of the following is true about sub-queries?

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

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

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

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

Which key accepts multiple NULL values?

Can you validate the statement? A column with a Primary key has a Null value. True or False?

Does an Index help to speed up?

Can you validate the statement? Join is different from Inner join. True or False?

Choose the correct query for the below scenario.

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

Statement: Join for each row of one table to every row of another table. Which Join?

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

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

Where are Joins used?

How many tables may include with a join?

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

What is the syntax for joining two tables? Pick Two

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

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

The SQL Statement SELECT ROUND(45.926, -1) FROM DUAL;

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

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

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

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

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

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

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

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;

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'

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;

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;

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

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

Can you validate the statement?

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

True or False?

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

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

Can you validate the statement?

A subquery can be used anywhere an expression is allowed.

True or False?

Can you validate the statement?

A column with a Primary key has a Null value.

True or False?

Can you validate the statement?

Join is different from Inner join.

True or False?

Statement: Join for each row of one table to every row of another table.

Which Join?

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 Count(*) from Salesemployee

WHERE Salary >=500 and Dept = 'Marketing';

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT SUM(Salary) from Salesemployee

where Name = 'Tom';

The SQL Statement

SELECT ROUND(45.926, -1) FROM DUAL;

Use below table (Salesemployee) and answer the following question

What is the output of following query?

SELECT MIN(Salary) from Salesemployee

WHERE Gender = 'Female';

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT SUM(Salary) from Salesemployee ;

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT AVG(Salary) from Salesemployee

where Dept = ' HR';

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT AVG(Salary) from Salesemployee

WHERE Gender = 'Female';

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