2022年12月21日
null
摘要： NULL To test for NULL, use the IS NULL and IS NOT NULL operators. The result of any arithmetic comparison with NULL is also NULL In MySQL, 0 or NULL m 阅读全文
posted @ 2022-12-21 13:58 5hithin 阅读(13) 评论(0) 推荐(0)
mysql基础命令行
摘要： Mysql Basic 1.Connect to mysql --initialization mysql -uroot -p123456 UPDATE user SET authentication_string="" WHERE user=“root”;--set the password wh 阅读全文
posted @ 2022-12-21 13:56 5hithin 阅读(29) 评论(0) 推荐(0)