mysql 导出数据CSV格式(转载)

作者: admin 分类: mysql 发布时间: 2013-09-04 11:32 ė 6 没有评论

MySql数据库导出csv

MySql数据库导出csv文件命令:

mysql> select first_name,last_name,email from account into outfile ‘e://output1.csv’ fields terminated by ‘,’optionally enclosed by ”lines terminated by ‘/n’;

csv文件效果:

sunny Grigoryan lovechoosesun@gmail.com
Jon Siegal sun@riliantech.net
Joe Siegal zhao@gmail.com
alejandro medina wei@gmail.com

cvs文件导入MySql数据库命令:
mysql> load data local infile ‘e://input1.csv’ into table test1 fields termin
ated by ‘,’lines terminated by ‘/n'(first_name,last_name,email);
Query OK, 1 row affected, 1 warning (0.00 sec)
Records: 69 Deleted: 0 Skipped: 68 Warnings: 0

mysql> select * from test1;
+—-+————+———–+————————–+
| id | first_name | last_name | email |
+—-+————+———–+————————–+
| 0 | sunny | Grigoryan | lovechoosesun@gmail.com
+—-+————+———–+————————–+

FIELDS TERMINATED BY —- 字段终止字符
OPTIONALLY ENCLOSED BY —- 封套符
LINES TERMINATED BY —- 行终止符

通过mysql客户端shell连接到服务器,选择使用的数据库,输入sql代码:

select * from test_info
into outfile ‘/tmp/test.csv’
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

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。

通过执行上述代码,便可以将需要的数据以csv格式导出到执行的文件中。

另外,MySQL中导入CSV格式数据的sql代码如下:

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

当csv文件中的每一行记录的列数小于数据库表时,以下语句将十分有用:

load data infile “/tmp/appleAppV2_search_day_20110525.csv” into table apple_search_log fields terminated by ‘;’ lines terminated by ‘/n’ (apptypeId,keyword,searchTime,model) ;

蓝色字部分是亮点。如果数据表包含自增字段,例如自增的ID, 这个语句将十分有用。

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