我想在 python-flask 中打印来自 function 的 sqlalchemy 查询的值

Question

result_1 = Attendance.query.with_entities(Attendance.month, Attendance.year, Attendance.emp_id, func.count(Attendance.status)).filter(and_(Attendance.month == month, Attendance.year == year, Attendance.status == 'Present')).group_by(Attendance.emp_id,Attendance.month,Attendance.year).all()
    #print(len(result_1))
    for r in result_1:
        print(r.month)
        print(r.year)
        print(r.emp_id)
        #print(r.count)

Here I can print all the month,year, id values but how can i print the value of count?

Answer 1

Try this.. use .label() to give the column a name and then use it later

result_1 = Attendance.query.with_entities(Attendance.month, Attendance.year, Attendance.emp_id, func.count(Attendance.status).label('status_count'))
    .filter(and_(Attendance.month == month, Attendance.year == year, Attendance.status == 'Present'))
    .group_by(Attendance.emp_id,Attendance.month,Attendance.year).all()
for r in result_1:
    print(r.month)
    print(r.year)
    print(r.emp_id)
    print(r.status_count)