我有以下代码,并抛出TypeError：execute()接受2到3个位置参数,但给出了7个.我不确定是否正确,但是这里是：
result_time = cur.execute("SELECT appointment_id FROM appointments WHERE appointment_time =%s",[appointment_time],"AND appointment_date =%s",[appointment_date],"AND doctor_id =%s",[actual_doctor_id.get('doctor_id')])
因此,当满足所有要求时,我想要一个特定的约会ID.
最佳答案
cursor.execute接受sql和一个参数元组-您单次给这些参数-因此您“塞满了”它并得到
TypeError: execute() takes from 2 to 3 positional arguments but 7 were given
更改您的代码包含1个sql语句和一个带params的元组：
result_time = cur.execute(
"SELECT appointment_id FROM appointments WHERE appointment_time = %s AND appointment_date = %s AND doctor_id = %s",( appointment_time,appointment_date,actual_doctor_id.get('doctor_id')) )
它会工作.
cursor.execute( slq,( param1,param2,... ) )
# this is all a tuple - hence the 2nd allowed param to execute.
见f.e. myslq-documentation或使用http://bobby-tables.com/python作为快速参考.
