Home Database Mysql Tutorial MYSQL使用经验(十)-常用命令

MYSQL使用经验(十)-常用命令

Jun 07, 2016 pm 04:15 PM
mysql use Order Commonly used Experience experience

MYSQL使用心得(十)----常用命令 查看引擎 show engines \G; 查看变量 show variables like '%binlog_format%'; 查看状态 show status like '%conn%'; mysql免登录执行命令 mysql -uroot -e "show slave status\G;" mysql指定配置文件登录 ./bin/mysql --defau

MYSQL使用心得(十)----常用命令
查看引擎
show engines \G;

查看变量
show variables like '%binlog_format%';

查看状态
show status like '%conn%';

mysql免登录执行命令
mysql -uroot -e "show slave status\G;"

mysql指定配置文件登录
./bin/mysql --defaults-file=/root/mysql/my.cnf -uroot

锁表
FLUSH TABLES WITH READ LOCK;
解锁
UNLOCK TABLES;

mysql调试语法
在报错以后,执行SHOW WARNINGS;
可以看到详细信息

开放ROOT远程访问,一般不要这么做
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'WITH GRANT OPTION;

乱码
命令行登陆MySQL,查看编码
mysql> show variables like '%character%'

创建数据库
create database my_test;
授权
grant all privileges on my_test.* to my_test@'%'  identified by 'my_test_123';

修改root密码
update mysql.user set password=password('open') where user='root';
flush privileges;

备份数据(其中可以人工指定socket参数 --socket=/application/search/mysql/mysql/tmp/mysql.sock)
./mysqldump -uroot my_test -v > /data0/search/my_test.sql
./mysqldump -uroot -popen opendata -v > /data0/search/my_test.sql
备份存储过程和函数
./mysqldump -uroot -popen -n -t -d -R opendata1 > /data0/search/opendata1_produce.sql
备份全部数据库快照
mysqldump
-uroot -p -h127.0.0.1 -P3306 --all-databases  --triggers --routines --events >all.sql

导入
1)先登录,首先要登录mysql,可以看到导入过程,但是终端网络断开,则导入终止
source /data0/search/my_test.sql
2)无需登录,后台执行导入命令,但是看不到过程
./mysql -uroot  my_test
统计表行数
use INFORMATION_SCHEMA;
select TABLE_ROWS,TABLE_NAME, TABLE_SCHEMA  from tables where TABLE_SCHEMA='my_test';
select sum(TABLE_ROWS)  from tables where TABLE_SCHEMA='my_test';

查看服务器线程
show processlist;

查看创建表的结构
show create table 表名;
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