MySQL导入导出.sql文件及常用命令小结
在MySQL Qurey Brower中直接导入*.sql脚本，是不能一次执行多条sql命令的，在mysql中执行sql文件的命令： mysql source c:\\test.sql; 另附mysql常用命令： (一) 连接MYSQL： 格式： mysql -h主机地址 -u用户名 －p用户密码 1、例1：连接到本机上的MYSQL 首
在MySQL Qurey Brower中直接导入*.sql脚本，是不能一次执行多条sql命令的，在mysql中执行sql文件的命令：
mysql> source c:\\test.sql;
另附mysql常用命令：
(一) 连接MYSQL：
格式： mysql -h主机地址 -u用户名 －p用户密码
1、例1：连接到本机上的MYSQL
首先在打开DOS窗口，然后进入mysql安装目录下的bin目录下，例如： D:/mysql/bin，再键入命令mysql -uroot -p，回车后提示你输密码，如果刚安装好MYSQL，超级用户root是没有密码的，故直接回车即可进入到MYSQL中了，MYSQL的提示符是：mysql>
2、例2：连接到远程主机上的MYSQL (远程：IP地址)
假设远程主机的IP为：10.0.0.1，用户名为root,密码为123。则键入以下命令：
mysql -h10.0.0.1 -uroot -p123
（注：u与root可以不用加空格，其它也一样）
3、退出MYSQL命令
exit （回车）
(二) 修改密码：
格式：mysqladmin -u用户名 -p旧密码 password 新密码
1、例1：给root加个密码123。首先在DOS下进入目录C:/mysql/bin，然后键入以下命令：
mysqladmin -uroot -password 123
注：因为开始时root没有密码，所以-p旧密码一项就可以省略了。
2、例2：再将root的密码改为456
mysqladmin -uroot -pab12 password 456
(三) 增加新用户：（注意：和上面不同，下面的因为是MYSQL环境中的命令，所以后面都带一个分号作为命令结束符）
格式：grant select on 数据库.* to 用户名@登录主机 identified by "密码"
例1、增加一个用户test1密码为abc，让他可以在任何主机上登录，并对所有数据库有查询、插入、修改、删除的权限。首先用以root用户连入MYSQL，然后键入以下命令： grant select,insert,update,delete on *.* to test2@localhost identified by "abc";
如果你不想test2有密码，可以再打一个命令将密码消掉。 grant select,insert,update,delete on mydb.* to test2@localhost identified by "";
(四) 显示命令
1、显示数据库列表：
show databases; 刚开始时才两个数据库：mysql和test。mysql库很重要它里面有MYSQL的系统信息，我们改密码和新增用户，实际上就是用这个库进行操作。
2、显示库中的数据表：
use mysql； //打开库 show tables;
3、显示数据表的结构：
describe 表名;
4、建库：
create database 库名;
5、建表：
use 库名； create table 表名 (字段设定列表)；
6、删库和删表:
drop database 库名; drop table 表名；
7、将表中记录清空：
delete from 表名;
8、显示表中的记录：
select * from 表名;
导出sql脚本
mysqldump -u 用户名 -p 数据库名 > 存放位置
mysqldump -u root -p test > c:/a.sql
导入sql脚本
mysql -u 用户名 -p 数据库名
mysqljump -u root -p test
注意,test数据库必须已经存在
MySQL导出导入命令的用例
1.导出整个数据库
mysqldump -u 用户名 -p 数据库名 > 导出的文件名
mysqldump -u wcnc -p smgp_apps_wcnc > wcnc.sql
2.导出一个表
mysqldump -u 用户名 -p 数据库名表名> 导出的文件名
mysqldump -u wcnc -p smgp_apps_wcnc users> wcnc_users.sql
3.导出一个数据库结构
mysqldump -u wcnc -p -d --add-drop-table smgp_apps_wcnc >d:wcnc_db.sql
-d 没有数据 --add-drop-table 在每个create语句之前增加一个drop table
4.导入数据库
常用source 命令
进入mysql数据库控制台,
如mysql -u root -p
mysql>use 数据库
然后使用source命令,后面参数为脚本文件(如这里用到的.sql)
mysql>source d:wcnc_db.sql
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