MySQL - 日常操作一 增删改查

mysql 源码安装

创建 mysql  账户 组

groupadd mysql
useradd mysql -g mysql -M -s /bin/false

解压缩源码安装

tar zxvf mysql-5.0.22.tar.gz
cd mysql-5.0.22
./configure --prefix=/usr/local/mysql \
--with-client-ldflags=-all-static \
--with-mysqld-ldflags=-all-static \
--with-mysqld-user=mysql \
--with-extra-charsets=all \
--with-unix-socket-path=/var/tmp/mysql.sock
make && make install
# 生成mysql用户数据库和表文件,在安装包中输入
scripts/mysql_install_db --user=mysql
vi ~/.bashrc
export PATH="$PATH: /usr/local/mysql/bin"

mysql  文件配置 

# 配置文件,有large,medium,small三个,根据机器性能选择
cp support-files/my-medium.cnf /etc/my.cnf
cp support-files/mysql.server /etc/init.d/mysqld
chmod 700 /etc/init.d/mysqld
cd /usr/local
chmod 750 mysql -R
chgrp mysql mysql -R
chown mysql mysql/var -R
cp /usr/local/mysql/libexec/mysqld mysqld.old
ln -s /usr/local/mysql/bin/mysql /sbin/mysql
ln -s /usr/local/mysql/bin/mysqladmin /sbin/mysqladmin
ln -s -f /usr/local/mysql/bin/mysqld_safe /etc/rc.d/rc3.d/S15mysql5
ln -s -f /usr/local/mysql/bin/mysqld_safe /etc/rc.d/rc0.d/K15mysql5

mysql 常用执行命令

/mysql/bin/mysqld_safe --user=mysql &   # 启动mysql服务
./mysql/bin/mysqladmin -uroot -p -S ./mysql/data/mysql.sock shutdown   # 停止mysql服务
mysqlcheck -uroot -p -S mysql.sock --optimize --databases account   # 检查、修复、优化MyISAM表

mysqlbinlog slave
-relay-bin.000001   # 查看二进制日志(报错加绝对路径)
mysqladmin
-h myhost -u root -p create dbname   # 创建数据库

mysql  内部常用操作

flush privileges;   # 刷新

show databases;   # 显示所有数据库
use dbname;      # 打开数据库
show tables;   # 显示选中数据库中所有的表
desc tables;   # 查看表结构
drop database name;   # 删除数据库
drop table name;   # 删除表
create database name;   # 创建数据库
select 列名称 from 表名称;   # 查询
show grants for repl;   # 查看用户权限
show processlist;   # 查看mysql进程
select user();   # 查看所有用户
show slave status\G;   # 查看主从状态
show variables;   # 查看所有参数变量
show table status   # 查看表的引擎状态
drop table if exists user   # 表存在就删除
create table if not exists user   # 表不存在就创建
select host,user,password from user;   # 查询用户权限 先use mysql
create table ka(ka_id varchar(6),qianshu int);   # 创建表
SHOW VARIABLES LIKE 'character_set_%';   # 查看系统的字符集和排序方式的设定
show variables like '%timeout%';   # 查看超时(wait_timeout)
delete from user where user='';   # 删除空用户
delete from user where user='sss' and host='localhost' ;   # 删除用户
ALTER TABLE mytable ENGINE = MyISAM ;   # 改变现有的表使用的存储引擎
SHOW TABLE STATUS from 库名 where Name='表名';   # 查询表引擎
CREATE TABLE innodb (id int, title char(20)) ENGINE = INNODB   # 创建表指定存储引擎的类型(MyISAM或INNODB)
grant replication slave on *.* to '用户'@'%' identified by '密码';   # 创建主从复制用户
ALTER TABLE player ADD INDEX weekcredit_faction_index (weekcredit, faction);   # 添加索引
alter table name add column accountid(列名) int(11) NOT NULL(字段不为空);   # 插入字段
update host set monitor_state='Y',hostname='xuesong' where ip='192.168.1.1';   # 更新数据

自增表

create table oldBoy (id INTEGER PRIMARY KEY AUTO_INCREMENT, name CHAR(30) NOT NULL, age integer , sex CHAR(15) ); 
# 创建自增表

insert into oldBoy(name,age,sex) values(%s,%s,%s) 
# 自增插入数据

 

posted @ 2018-04-01 21:20  01234567  阅读(161)  评论(0编辑  收藏  举报