发布于 2016-03-08 01:18:32 | 145 次阅读 | 评论: 0 | 来源: 网友投递
Mysql关系型数据库管理系统
MySQL是一个开放源码的小型关联式数据库管理系统,开发者为瑞典MySQL AB公司。MySQL被广泛地应用在Internet上的中小型网站中。由于其体积小、速度快、总体拥有成本低,尤其是开放源码这一特点,许多中小型网站为了降低网站总体拥有成本而选择了MySQL作为网站数据库。
mysqldump -uroot -p --default-character-set=utf8 dbname tablename > bak.sql
mysql -uroot -p --default-character-set=utf8 dbname < bak.sql
mysql> show variables like ‘%char%';
+————————–+—————————-+
| Variable_name | Value |
+————————–+—————————-+
| character_set_client | latin1 |
| character_set_connection | latin1 |
| character_set_database | latin1 |
| character_set_filesystem | binary |
| character_set_results | latin1 |
| character_set_server | gbk |
| character_set_system | utf8 |
| character_sets_dir | D:mysqlsharecharsets |
+————————–+—————————-+
mysql>set character_set_database=utf8; ##设置默认的字符集为utf8
mysql> select * from table into outfile ‘c:table.txt' where +条件
mysql> show variables like ‘%char%';
+————————–+—————————-+
| Variable_name | Value |
+————————–+—————————-+
| character_set_client | latin1 |
| character_set_connection | latin1 |
| character_set_database | latin1 |
| character_set_filesystem | binary |
| character_set_results | latin1 |
| character_set_server | gbk |
| character_set_system | utf8 |
+————————–+—————————-+
mysql>set character_set_database=utf8; ##设置默认的字符集为utf8
mysql>load data local infile ‘/home/table.txt' into table `table`;
show variables like 'char%';
[mysql]
default-character-set=gbk
[mysqld]
character-set-server=utf8