如何根据时间戳列的日期部分对行进行分组？

import mysql.connector
from datetime import datetime

# 连接到MySQL数据库
cnx = mysql.connector.connect(user='username', password='password',
                              host='localhost', database='database_name')

# 创建游标对象
cursor = cnx.cursor()

# 查询数据并按日期部分进行分组
query = "SELECT DATE_FORMAT(timestamp_column, '%Y-%m-%d') AS date, COUNT(*) AS count FROM table_name GROUP BY date"
cursor.execute(query)

# 获取查询结果
results = cursor.fetchall()

# 打印每个日期分组的统计结果
for row in results:
    date = row[0]
    count = row[1]
    print("Date: {}, Count: {}".format(date, count))

# 关闭游标和数据库连接
cursor.close()
cnx.close()