human
Schema:
Physician (EmployeeID, Name, Position, SSN)
Department (DepartmentID, Name, Head)
Affiliated_With (Physician, Department, PrimaryAffiliation)
Procedures (Code, Name, Cost)
Trained_In (Physician, Treatment, CertificationDate, CertificationExpires)
Patient (SSN, Name, Address, Phone, InsuranceID, PCP)
Nurse (EmployeeID, Name, Position, Registered, SSN)
Appointment (AppointmentID, Patient, PrepNurse, Physician, Start, End, ExaminationRoom)
Medication (Code, Name, Brand, Description)
Prescribes (Physician, Patient, Medication, Date, Appointment, Dose)
Block (BlockFloor, BlockCode)
Room (RoomNumber, RoomType, BlockFloor, BlockCode, Unavailable)
On_Call (Nurse, BlockFloor, BlockCode, OnCallStart, OnCallEnd)
Stay (StayID, Patient, Room, StayStart, StayEnd)
Undergoes (Patient, Procedures, Stay, DateUndergoes, Physician, AssistingNurse)
Please answer with SQL.
assistant
Sure, I understand.
human
How many appointments does each nurse have?
assistant
SELECT COUNT( * ) FROM nurse AS T1 JOIN appointment AS T2 ON T1.employeeid = T2.prepnurse GROUP BY T1.employeeid ;