mysql dump数据
从A主机导入数据到B主机
mysqldump -hA -uusername -ppassword db_name >dumpfile
mysql -hB -uusername -ppassword
mysql>create database db_name2;
mysql>use db_name2;
mysql>source dumpfile;
先用dump把A中的数据库db_name导入到文件dumpfile,然后在B主机上,创建一个新的数据库db_name2,使用source命令,把文件导入到该数据库。
相关文档:
1.select max(id) from user;
2.select last_insert_id() as id from user limit 1;
(这个测试的返回id一直是0,有点问题)
3.储存过程
1)
oracel中
create sequence seqID
minvalue 1
maxvalue 999999999999999999999999999
start with 1
increment by 1
nocache
order;
create or replace procedure ......
表:
CREATE TABLE `user` (
`id` int(5) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(10) DEFAULT NULL,
`password` varchar(10) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM AUTO_INCREMENT=4 DEFAULT CHARSET=latin1
其中有数据为:
1 name1 123456
2&nbs ......
一、事务处理(myisam引擎不支持事务,innodb引擎支持事务)
(1)start transaction
(2)commit
(3)rollback,rollback to [savepoint name]
(4)savepoint [savepoint name]
(5)set autocommit=0 or 1
(6)release savepoint [savepoint name]
注意:create、drop等操作,不能回退
二、字符集
1.字符编码 ......