MySQL中怎么导出CSV格式数据

MySQL中怎么导出CSV格式数据，相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。

MySQL中导出CSV格式数据的SQL语句样本如下：

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';  

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：

Sql代码 
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

Sql代码 
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

Sql代码 
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

Text代码 
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)

Bash代码 
#!/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:   
# 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:
# 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__csv.sh)

Bash代码 
#!/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 

#!/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

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