摘要： 问题情境没有关闭mysqld服务器，直接重启linux，重启linux后报错[root@localhost ~]# /usr/local/mysql/bin/mysql ERROR 2002 (HY000): Can't connect to local MySQL server through s... 阅读全文

摘要： 问题情境create table score ( student_id int, subject varchar(10), subject_score int);insert into score values (001,'数学',50),(002,'数学',60),(003,'数... 阅读全文