User-Generated SQL Query

I would like my website users to be able to search a database of employees and the employee data would be displayed in a table under the search.

For example, if someone were to search “Jim Hammond”

The plugin would be able to generate a query like this:
SELECT firstname, lastname, phone, city, state FROM Employees_b1 WHERE (firstname = 'Jim') AND (lastname = 'Hammond')

and display the resulting data in a table below the search entry.

Is there such a plugin? Is there an easier way to do this?