我在获取基本上为空值的数据库字段值时遇到问题SELECT * FROM table WHERE field=''; //this means null in phpSELECT * FROMtable WHERE field IS NULL; //this means null in mysql db
这两个查询产生不同的结果。空值和空值有什么不同?空<em
我们甚至尝试过重新安装MYSQL服务器。Version: '5.7.34' socket: '/var/lib/mysql/mysql.sock' port: 3306 MySQL Community Server (GPL)
2021Version: '5.7.34' socket: '/var/lib/mysql/mysql.s