STRUCTURED QUERY LANGUAGE TEST

Progress

1.

What is the full form of SQL?

2.

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

3.

 What does a  DML Stand for?

4.

What is the main language of  Transact-SQL?

5.

Which of the following database cannot be dropped?

6.

Which one is not used in SQL?

7.

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

8.

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

9.

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

10.

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    

11.

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

12.

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

13.

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

14.

You can delete a view with _____________ Command.

15.

Which of the SQL statement is correct?

16.

 Syntax for create a  views is _______

17.

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

18.

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;

19.

Find all the cities whose humidity is 89

20.

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

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

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.

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    

23.

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

24.

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

25.

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''?

26.

Find the names of the countries whose condition is sunny

27.

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

28.

Can you validate the statement?

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

True or False?

29.

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?

30.

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

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

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.

A subquery in an SQL SELECT statement is enclosed in

34.

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

35.

Can you validate the statement?

An ORDER BY can be used in a subquery.

True or False?

36.

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

37.

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

38.

Which key accepts multiple NULL values?

39.

Does an Index help to speed up?

40.

Can you validate the statement?

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

True or False?

41.

Below image depicts:

42.

What is the syntax for joining two tables? Pick Two

43.

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

 

44.

Which type of join is not desirable for retrieval?

45.

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? 

46.

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

47.

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

48.

Choose the query that matches the above image.

49.

Can you validate the statement?

Alias is used in Joins.

True or False?

50.

How many tables may include with a join? 

51.

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 ;  

52.

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

53.

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

54.

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

 

55.

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%';  

 

56.

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%';

 

57.

“COUNT” keyword belongs to which categories in MySQL?

58.

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

 

59.

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

60.

Which of the following is incorrect SQL?

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