MySQL中導出CSV格式數據的SQL語句樣本如下：

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';

MySQL中導入CSV格式數據的SQL語句樣本如下,要導入的文件編碼格式是UTF-8：

load?data local?infile?'/tmp/test.csv'

into?table?test_info

fields?terminated?by?','??optionally?enclosed?by?'"'?escaped?by?'"'

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';

里面最關鍵的部分就是格式參數

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'

這個參數是根據RFC4180文檔設置的，該文檔全稱Common Format and MIME Type for Comma-Separated Values (CSV) Files，其中詳細描述了CSV格式，其要點包括：

(1)字段之間以逗號分隔，數據行之間以\r\n分隔；

(2)字符串以半角雙引號包圍，字符串本身的雙引號用兩個雙引號表示。

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 integernot 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"

在Linux下如果經常要進行這樣的導入導出操作，當然最好與Shell腳本結合起來，為了避免每次都要寫格式參數，可以把這個串保存在變量中，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數據庫

#?license:?LGPL

#?author:?codingstandards

#?email:?codingstandards@gmail.com

#?version:?1.0

#?date:?2010.02.28

#?MySQL中導入導出數據時，使用CSV格式時的命令行參數

#?在導出數據時使用：select?...?from?...?[where?...]?into?outfile?'/tmp/data.csv'?$MYSQL_CSV_FORMAT;

#?在導入數據時使用：load?data?infile?'/tmp/data.csv'?into?table?...?$MYSQL_CSV_FORMAT;

#?CSV標準文檔：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數據庫

# license: LGPL

# author: codingstandards

# email: codingstandards@gmail.com

# version: 1.0

# date: 2010.02.28

# MySQL中導入導出數據時，使用CSV格式時的命令行參數

# 在導出數據時使用：select ... from ... [where ...] into outfile '/tmp/data.csv' $MYSQL_CSV_FORMAT;

# 在導入數據時使用：load data infile '/tmp/data.csv' into table ... $MYSQL_CSV_FORMAT;

# CSV標準文檔：RFC 4180

MYSQL_CSV_FORMAT="fields terminated by ',' optionally enclosed by '\"' escaped by '\"' lines terminated by '\r\n'

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