How can MySQL pop up a black window at a scheduled time every day?

MySQL is a relational database management system used primarily for storing and managing data, but it does not offer pop-up window functionality. If you want to achieve the function of timing pop-up windows, you will need to use other programming languages or technologies.

Here is an example code using Python to pop up a black window at a scheduled time every day.

import datetime
import os

# 设置定时任务时间，这里设置为每天的8点
task_time = datetime.time(8, 0, 0)

while True:
    now = datetime.datetime.now().time()
    
    if now >= task_time:
        # 在指定时间弹出黑窗口
        os.system("cmd.exe")
        
        # 完成任务后退出循环
        break

This code will check the current time every second to see if it has reached the specified time. When the time reaches the specified time, a black window will pop up. You can modify the timing of the task and the command to pop up the window according to your needs.

It is important to note that this is just a simple example code, if you want more flexible and reliable scheduled tasks, you may need to use dedicated scheduling frameworks like APScheduler.