instruction: Give me a bar chart that group and count names of technicians with a series of machines they are assigned to repair, order in asc by the y axis please.
response: SELECT Name, COUNT(Name) FROM repair_assignment AS T1 JOIN machine AS T2 ON T1.Machine_ID = T2.Machine_ID JOIN technician AS T3 ON T1.technician_id = T3.technician_id GROUP BY Name ORDER BY COUNT(Name)