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‘;
- select * from test_info
- into outfile ‘/tmp/test.csv‘
- fields terminated by ‘,‘ optionally enclosed by ‘"‘ escaped by ‘"‘
- 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:
- load data infile ‘/tmp/test.csv‘
- into table test_info
- fields terminated by ‘,‘ optionally enclosed by ‘"‘ escaped by ‘"‘
- lines terminated by ‘\r\n‘;
- load data infile ‘/tmp/test.csv‘
- into table test_info
- fields terminated by ‘,‘ optionally enclosed by ‘"‘ escaped by ‘"‘
- lines terminated by ‘\r\n‘;
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‘
- fields terminated by ‘,‘ optionally enclosed by ‘"‘ escaped by ‘"‘
- 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
- 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;
-
-
- 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;
-
-
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
- 2010,"hello, line
- suped
- seped
- ""
- end"
- 2010,"hello, line
- suped
- seped
- ""
- 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)
- #!/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‘"
#!/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 ... $MYSQL_CSV_FORMAT;
# CSV标准文档:RFC 4180
MYSQL_CSV_FORMAT="fields terminated by ‘,‘ optionally enclosed by ‘\"‘ escaped by ‘\"‘ lines terminated by ‘\r\n‘"
使用示例如下:(文件test_mysql_csv.sh)
- #!/bin/sh
-
- . /opt/shtools/commons/mysql.sh
-
- # MYSQL_CSV_FORMAT="fields terminated by ‘,‘ optionally enclosed by ‘\"‘ escaped by ‘\"‘ lines terminated by ‘\r\n‘"
- echo "MYSQL_CSV_FORMAT=$MYSQL_CSV_FORMAT"
-
- rm /tmp/test.csv
-
- mysql -p --default-character-set=gbk -t --verbose test <<EOF
-
- use test;
-
- create table if not exists 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‘;
- select * from test_info into outfile ‘/tmp/test.csv‘ $MYSQL_CSV_FORMAT;
-
- 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‘;
- load data infile ‘/tmp/test.csv‘ into table test_info $MYSQL_CSV_FORMAT;
-
- select * from test_info;
-
-
- EOF
-
- echo "===== content in /tmp/test.csv ====="
- cat /tmp/test.csv
转自:http://blog.csdn.net/sara_yhl/article/details/6850107