SQL | Structured Query Language Test

The result of a SQL SELECT statement is a ______.

Which of the following is the original purpose of SQL?

Which one is a non-relational database?

Which of the following database cannot be dropped?

What is the main language of Transact-SQL?

Which of the SQL statement is correct?

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 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

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;

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?

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

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

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

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''?

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

Find all the cities whose humidity is 89

The SQL WHERE clause used for

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'

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

Select ________ dept_name from instructor;

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

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?

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

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

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

Find the names of the countries whose condition is sunny

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

Which one is not used in SQL?

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

Which of the following statements are TRUE regarding subqueries?

Where subqueries can not be used?

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

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

Can you validate the statement?

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

True or False?

Which key accepts multiple NULL values?

Which one of the following can be taken as a Primary Key?

How many Primary Keys can have in a table?

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

Can you validate the statement?

Join is different from Inner join.

True or False?

Choose the query that matches the above image.

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?

Can you validate the statement?

Alias is used in Joins.

True or False?

What are the joins available in SQL?

Where are Joins used?

Below image depicts:

What is the syntax for joining two tables? Pick Two

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

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%' and Dept ='HR';

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 ;

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 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(Salary) from Salesemployee

where name Like 'T%';

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

Which SQL keyword is used to retrieve a maximum value?

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 ;

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT Count(*) from Salesemployee

WHERE Gender = 'Male';

What values does the count(*) function ignore?

STRUCTURED QUERY LANGUAGE TEST

The result of a SQL SELECT statement is a ______.

Which of the following is the original purpose of SQL?

Which one is a non-relational database?

Which of the following database cannot be dropped?

What is the main language of Transact-SQL?

Which of the SQL statement is correct?

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 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

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;

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?

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

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

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

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''?

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

Find all the cities whose humidity is 89

The SQL WHERE clause used for

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'

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

Select ________ dept_name from instructor; Here which of the following displays the unique values of the column?

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?

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

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

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

Find the names of the countries whose condition is sunny

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

Which one is not used in SQL?

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

Which of the following statements are TRUE regarding subqueries?

Where subqueries can not be used?

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

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

Can you validate the statement? We can use the index on columns that contain a high number of NULL values. True or False?

Which key accepts multiple NULL values?

Which one of the following can be taken as a Primary Key?

How many Primary Keys can have in a table?

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

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

Choose the query that matches the above image.

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?

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

What are the joins available in SQL?

Where are Joins used?

Below image depicts:

What is the syntax for joining two tables? Pick Two

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

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%' and Dept ='HR';

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 ;

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

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

Which SQL keyword is used to retrieve a maximum value?

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 ;

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

What values does the count(*) function ignore?

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

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 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

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;

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?

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

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;

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'

Select ________ dept_name from instructor;

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

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?

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

True or False?

Can you validate the statement?

Join is different from Inner join.

True or False?

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?

Can you validate the statement?

Alias is used in Joins.

True or False?

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%' and Dept ='HR';

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 ;

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(Salary) from Salesemployee

where name Like 'T%';

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 ;

Use below table (Salesemployee) and answer the following question

What is the output of following query ?

SELECT Count(*) from Salesemployee

WHERE Gender = 'Male';

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

1.

File
Report
Table
Form

2.

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

3.

Postgre
MySQL
MariaDB
MongoDB

4.

TEMPDB
Master
Msdb
All of the Mentioned

5.

DDL
DML
DCL
None of the above

6.

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

7.

TRUE
FALSE

8.

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

9.

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

10.

Salary*1.1
ID
Where
Instructor

11.

ORDER BY
SORT
ORDER
SORT BY

12.

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

13.

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.

14.

Select * from Persons where Firstname='a'
Select * from Persons where Firstname Like 'a%'
Select * from Persons where Firstname like '%a'
Select * from Persons where Firstname='%a%'

15.

TRUE
FALSE

16.

FROM Customers UPDATE ContactName = 'Adam Smith' WHERE CustomerID = 111;
Select Customers Update ContactName = 'Adam Smith' WHERE CustomerID = 111;
UPDATE ContactName = 'Adam Smith' from Customer WHERE CustomerID = 111;
UPDATE Customers SET ContactName = 'Adam Smith' WHERE CustomerID = 111;

17.

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

18.

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.

19.

TRUE
FALSE

20.

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 =

21.

All
From
Distinct
Name

22.

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

23.

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

24.

ASC
DESC
Order by Randomly
No output

25.

CREATE
UPDATE
ALTER
SELECT

26.

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.

27.

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.

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

29.

Create Table
Create Index
Create Unique Index
Create Table Column

30.

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;

31.

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

32.

Field names in the SELECT statement
The WHERE clause only in the SELECT statement
The WHERE clause in SELECT as well as all DML statements
The FROM clause in the SELECT statement

33.

AND, OR
< , > >, <>

34.

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

35.

TRUE
FALSE

36.

Candidate Key
Sub Key
Super Key
Foreign Key

37.

TRUE
FALSE

38.

Foreign Key
Unique Key
Primary Key
None of the above

39.

Order Number
Order Date
Order Location
Order Name

40.

1 only
2 only
Depends on no of Columns
Depends on DBA

41.

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 FULLY OUTER 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 SELF JOIN Customers ON Orders.CustomerID=Customers.CustomerID;

42.

TRUE
FALSE

43.

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

44.

SELECT employee_id, department_id, department_name, salary FROM employees WHERE department_id IN (SELECT department_id FROM departments);
SELECT employee_id, department_id, department_name, salary FROM employees NATURAL JOIN departments;
SELECT employee_id, d.department_id, department_name, salary FROM employees e JOIN departments d ON e.department_id = d.department_id;
SELECT employee_id, department_id, department_name, salary FROM employees JOIN departments USING (e.department_id, d.department_id);

45.

TRUE
FALSE

46.

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

47.

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.

SELF JOIN
INNER JOIN
FULL OUTER JOIN
None of the above

49.

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

50.

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;

51.

3
1
8
4

52.

8
4
2

53.

Aggregate function
Adjunct function
Set Operation
Scalar Operation

54.

1000
1500
500
200

55.

3
5
1
4

56.

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

57.

MOST
TOP
MAX
UPPER

58.

200
500
700
100

59.

8
4
5
3

60.

Repetitive values
Null values
Characters
Integers

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

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 employee_id, e.department_id, department_name, salary
FROM employees e, departments d
WHERE e.department_id = d.department_id;

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%' and Dept ='HR';

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 ;

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

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 MIN(Salary) from Salesemployee
WHERE Employee_ID % 2 <> 0 ;

SELECT branch_name, COUNT (DISTINCT customer_name)

FROM depositor, account

WHERE depositor.account_number = account.account_number

GROUP BY branch_id