get data from mysql

import pymysql

connection = pymysql.connect(host='localhost', port=3306, user='manager_app',
                            password='mgrapp123!@#', db='wjdbmgrapp',
                            charset='utf8')

cursor = connection.cursor()
data = []
sql = 'select times from mq2004_record where date="2019-10-15 00:00:00" order by times desc ;'
cursor.execute(sql)
rows = cursor.fetchall()
for row in rows:
    data.append(row[0])
print("size of data is: %d \n" % len(data))
print("max is: %d, min is %d" % (min(data), max(data)))