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。
