STRUCTURED QUERY LANGUAGE TEST

Progress

1.

The result of a SQL SELECT statement is a ______.

2.

 What does a  DML Stand for?

3.

Which of the following database cannot be dropped?

4.

Which file type is used for database backup?

5.

To delete the database __________ Command is used

6.

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

7.

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

8.

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?

9.

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

10.

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    

11.

Which of the SQL statement is correct?

12.

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

13.

The SQL WHERE clause used for 

14.

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

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

15.

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''?

16.

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

17.

Which one is not used in SQL?

18.

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'

19.

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

20.

 Syntax for create a  views is _______

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.

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

23.

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;

24.

Can you validate the statement?

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

True or False?

25.

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

26.

The HAVING clause does which of the following?

27.

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;  

28.

You can delete a view with _____________ Command.

29.

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

30.

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

31.

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

32.

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

33.

Which of the following is true about sub-queries?

34.

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

35.

Which of the following statements are TRUE regarding subqueries?

36.

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

37.

Student (ID, Name, Dept_name, Total_credit)

In this above query which attribute form the Primary Key?

38.

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

39.

Which key accepts multiple NULL values?

40.

Can you validate the statement?

A table contains more than one foreign key

True or False?

41.

Where are Joins used?

42.

Which type of join is not desirable for retrieval?

43.

How many tables may include with a join? 

44.

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

Which Join?

45.

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

 

46.

What is the syntax for joining two tables? Pick Two

47.

Below image depicts:

48.

Choose the correct query for the below scenario.

 

49.

What are the joins available in SQL?

50.

What is the function of Full Outer Join in SQL?

51.

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

 

52.

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

53.

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%';  

 

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 Max(Salary) from Salesemployee 
WHERE Gender = 'Male';  

 

56.

Use below table (Salesemployee)  and answer the following question

What is the output of the following query?

SELECT SUM(Salary) from Salesemployee     
WHERE Gender = 'Male';      
        

57.

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

 

58.

Which SQL keyword is used to retrieve the highest value? 

59.

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 ;  

 

60.

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 ;    

 

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