mysql命令行导入和导出数据

首先打开命令窗口,输入命令:mysql -h localhost -u selffabu -p

连接成功后,进行下面的操作

MySQL中导出CSV格式数据的SQL语句样本如下：

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

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,要导入的文件编码格式是UTF-8：

1. load data local infile '/tmp/test.csv'
2. into table test_info
3. fields terminated by ','  optionally enclosed by '"' escaped by '"'
4. lines terminated by '\n';

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

里面最关键的部分就是格式参数

1. fields terminated by ',' optionally enclosed by '"' escaped by '"'
2. lines terminated by '\r\n'

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。

文件：test_csv.sql

1. use test;
2. create table test_info (
3. id  integer not null,
4. content varchar(64) not null,
5. primary key (id)
6. );
7. delete from test_info;
8. insert into test_info values (2010, 'hello, line
9. suped
10. seped
11. "
12. end'
13. );
14. select * from test_info;
15. select * from test_info into outfile '/tmp/test.csv' fields terminated by ',' optionally enclosed by '"' escaped by '"' lines terminated by '\r\n';
16. delete from test_info;
17. load data infile '/tmp/test.csv' into table test_info  fields terminated by ','  optionally enclosed by '"' escaped by '"' lines terminated by '\r\n';
18. select * from test_info;

use test;

create table test_info (
	id 	integer	not null,
	content varchar(64) not null,
	primary key (id)
);

delete from test_info;

insert into test_info values (2010, 'hello, line
suped
seped
"
end'
);

select * from test_info;

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

delete from test_info;

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

select * from test_info;

文件：test.csv

1. 2010,"hello, line
2. suped
3. seped
4. ""
5. end"

2010,"hello, line
suped
seped
""
end"

在Linux下如果经常要进行这样的导入导出操作，当然最好与Shell脚本结合起来，为了避免每次都要写格式参数，可以把这个串保存在变量中，如下所示：(文件mysql.sh)

1. #!/bin/sh
2. # Copyright (c) 2010 codingstandards. All rights reserved.
3. # file: mysql.sh
4. # description: Bash中操作MySQL数据库
5. # license: LGPL
6. # author: codingstandards
7. # email: codingstandards@gmail.com
8. # version: 1.0
9. # date: 2010.02.28
10. # MySQL中导入导出数据时，使用CSV格式时的命令行参数
11. # 在导出数据时使用：select ... from ... [where ...] into outfile '/tmp/data.csv' $MYSQL_CSV_FORMAT;
12. # 在导入数据时使用：load data infile '/tmp/data.csv' into table ... $MYSQL_CSV_FORMAT;
13. # CSV标准文档：RFC 4180
14. MYSQL_CSV_FORMAT="fields terminated by ',' optionally enclosed by '\"' escaped by '\"' lines terminated by '\r\n'"

#!/bin/sh

# Copyright (c) 2010 codingstandards. All rights reserved.
# file: mysql.sh
# description: Bash中操作MySQL数据库
# license: LGPL
# author: codingstandards
# email: codingstandards@gmail.com
# version: 1.0
# date: 2010.02.28

# MySQL中导入导出数据时，使用CSV格式时的命令行参数
# 在导出数据时使用：select ... from ... [where ...] into outfile '/tmp/data.csv' $MYSQL_CSV_FORMAT;
# 在导入数据时使用：load data infile '/tmp/data.csv' into table ... $MYSQL_CSV_FORMAT;
# CSV标准文档：RFC 4180
MYSQL_CSV_FORMAT="fields terminated by ',' optionally enclosed by '\"' escaped by '\"' lines terminated by '\r\n'

转自:http://blog.csdn.net/sara_yhl/article/details/6850107