笔者在ubuntu下用 apt install mysql-server类似的命令安装mysql, 安装了最新版的mysql5.7,覆盖了操作系统内置的数据库mysql系统库. 最初启动mysql出错信息如下 service mysql start Job for mysql.service failed because the control process exited with error code. See "systemctl status mysql.service" an…
180720 10:00:54 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it. 180720 10:00:54 InnoDB: Initializing buffer pool, size = 8.0M 180720 10:00:54 InnoDB: Completed initialization of buffer pool InnoDB: Error: log file…
ALTER COLUMN 语法: ALTER [COLUMN] col_name {SET DEFAULT literal | DROP DEFAULT} 作用: 设置或删除列的默认值.该操作会直接修改.frm文件而不涉及表数据.所以,这个操作非常快. 例子: mysql> alter table film alter column rental_duration set default 5; mysql> alter table film alter column rental_durati…
报错: [root@XXXX tmp]# mysql -uroot -pmysql: unknown option '--You have new mail in /var/spool/mail/root'[root@XXXX tmp]# [root@XXXX tmp]# mysql --?mysql: unknown option '--You have new mail in /var/spool/mail/root'[root@XXXX tmp]# --------------------…
service mysqld start 报错 090517 13:34:15 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it. 090517 13:34:15 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist 090517 13:34:15 mysq…