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MySQL数据库通过命令导入导出数据

Jun 07, 2016 pm 05:21 PM

学习总结基本的MySQL数据库导入导出操作 1 表tt的格式: CREATE TABLE `tt` ( `ind` int NOT NULL auto_increment, `name`

学习总结基本的MySQL数据库导入导出操作
 
 1 表tt的格式:
 
 CREATE TABLE `tt` (
  `ind` int NOT NULL auto_increment,
  `name` char(100) default NULL,
  PRIMARY KEY  (`ind`)
 )
 
2 文件d.txt的内容示例:
 1,a
 2,b
 3,c
 
 3 导入命令:
 mysql> load data infile 'd.txt' into table tt
    -> fields terminated by','
    -> lines terminated by'\r\n'
 
 注意的地方:
 1)、文件可以使用绝对路径如'c:/d.txt',否则请将文件放在数据库根目录中
 2)、因为字段之间用了逗号隔开,所以必须fields terminated by',',否则导入失败
 3)、因为Winsows中行以“\r\n”隔开,所以必须lines terminated by'\r\n',
 如果不设置这个参数,也可导入成功,但是会多导入一个“\r”控制字符,可能在可视化
 MySQL工具中看不出字段异样,但是在MySQL命令行中显示会明显混乱。
 4)、如果表tt非空,,且文件中的ind值在表中有重复,会提示错误,并导入失败。
 
 只导入name字段,文件d.txt的内容:
 a
 b
 c
 
 mysql> load data infile 'd.txt' into table tt
    -> lines terminated by'\r\n'
    -> (name);
 
 load data 命令还支持更复杂的文本格式、文件编码等,可参考官方文档。
 
 5 导出到数据到windows文本文件时,为了方便查看,也需要相同的设置
 mysql> select * from tt into outfile 'd.txt'
    -> fields terminated by','
    -> lines terminated by'\r\n'

linux

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