Bash中使用MySQL导入导出CSV格式数据[转]

转自： http://codingstandards.iteye.com/blog/604541

MySQL中导出CSV格式数据的SQL语句样本如下：

select * from test_info
into outfile ‘/tmp/test.csv‘
fields terminated by ‘,‘ optionally enclosed by ‘"‘ escaped by ‘"‘
lines terminated by ‘\r\n‘; 

MySQL中导入CSV格式数据的SQL语句样本如下：

load data infile ‘/tmp/test.csv‘
into table test_info
fields terminated by ‘,‘  optionally enclosed by ‘"‘ escaped by ‘"‘
lines terminated by ‘\r\n‘; 

里面最关键的部分就是格式参数

fields terminated by ‘,‘ optionally enclosed by ‘"‘ escaped by ‘"‘
lines terminated by ‘\r\n‘ 

这个参数是根据RFC4180文档设置的，该文档全称Common Format and MIME Type for Comma-Separated Values (CSV) Files，其中详细描述了CSV格式，其要点包括：

(1)字段之间以逗号分隔，数据行之间以\r\n分隔；

(2)字符串以半角双引号包围，字符串本身的双引号用两个双引号表示。