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 patients in this table?
assistant
SELECT COUNT( patient ) FROM Stay;
human
Find the patient who most recently stayed in room 112?
assistant
SELECT patient FROM stay WHERE room = 112 ORDER BY staystart DESC LIMIT 1;
human
How many rooms in this table?
assistant
SELECT COUNT( distinct room ) FROM stay ;