write a sql query to find the number of employees made the transactions in a store by

[G lavanya]

write a sql query to find the number of employees made the transactions in a store by month where there can be multiple transactions by each employee

[Luuk]

Since by now you are probably too late for your homework anyway …

SELECT
   COUNT(NumberOfEmployees)
FROM Store
WHERE
  NumberOfTransactions >= 1
GROUP BY
  Month

If this is not what you want, you should stop doing this course, and start doing a course where you learn to properly explain what you want to accomplish.

Also it would be of help to kno what kind of data you have to get the results you want.

In this case:
How are transactions stored in your database, How is the table transactions defined? (and the same question for the table employees)

If this information is not known, to a reader here, no one could give a correct answer.