SELECT T1.date_of_treatment ,  T2.first_name FROM Treatments AS T1 JOIN Professionals AS T2 ON T1.professional_id  =  T2.professional_id
What are the date and the operating professional's first name of each treatment?
SELECT T1.date_of_treatment , T2.first_name FROM Treatments AS T1 JOIN Professionals AS T2 ON T1.professional_id = T2.professional_id
select t1 . date_of_treatment , t2 . first_name from treatments as t1 join professionals as t2 on t1 . professional_id = t2 . professional_id
What are the date and the operating professional 's first name of each treatment ?