如何获取数据库中该列的多个数据值？

SELECT username FROM users;

import mysql.connector

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

# 创建游标
cursor = cnx.cursor()

# 执行查询语句
query = "SELECT username FROM users"
cursor.execute(query)

# 获取查询结果
results = cursor.fetchall()

# 打印结果
for row in results:
    print(row[0])

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

from myapp.models import User

# 获取所有用户的用户名
usernames = User.objects.values_list('username', flat=True)

# 打印结果
for username in usernames:
    print(username)