mysql 8.0修改root密码

参考：https://www.cnblogs.com/chloneda/p/12449819.html#:~:text=%E5%9C%A8MySQL%208.0%E5%89%8D%EF%BC%8C%E6%89%A7%E8%A1%8C%EF%BC%9ASET%20PASSWORD%3DPASSWORD%20%28%27%20%5B%E6%96%B0%E5%AF%86%E7%A0%81%5D%27%29%20%E8%BF%9B%E8%A1%8C%E5%AF%86%E7%A0%81%E4%BF%AE%E6%94%B9%EF%BC%8C%E5%9C%A8MySQL%208.0%E5%90%8E%EF%BC%8C%E4%BB%A5%E4%B8%8A%E7%9A%84%E6%96%B9%E6%B3%95%E4%BD%BF%E7%94%A8root%E7%94%A8%E6%88%B7%E4%BF%AE%E6%94%B9%E5%88%AB%E7%9A%84%E7%94%A8%E6%88%B7%E5%AF%86%E7%A0%81%E6%98%AF%E6%8A%A5%E9%94%99%E7%9A%84%EF%BC%8C%E5%9B%A0%E4%B8%BAMySQL%208.0%E5%90%8E%E4%BF%AE%E6%94%B9%E4%BA%86%E4%BF%AE%E6%94%B9%E5%AF%86%E7%A0%81%E7%9A%84%E6%96%B9%E5%BC%8F%EF%BC%81.,user%20%3D%20%27%E7%94%A8%E6%88%B7%E5%90%8D%27%20%3B%20mysql%3E%20flush%20privileges%3B%20–%E5%88%B7%E6%96%B0MySQL%E7%9A%84%E7%B3%BB%E7%BB%9F%E6%9D%83%E9%99%90%E7%9B%B8%E5%85%B3%E8%A1%A8.