├── LICENSE
├── README.md
└── src
├── f.sh
├── page.sh
└── port.sh
/LICENSE:
--------------------------------------------------------------------------------
1 | MIT License
2 |
3 | Copyright (c) 2013 qindongliang
4 |
5 | Permission is hereby granted, free of charge, to any person obtaining a copy
6 | of this software and associated documentation files (the "Software"), to deal
7 | in the Software without restriction, including without limitation the rights
8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 |
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 |
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 |
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/README.md:
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1 | # shell-mysql
2 | 使用shell脚本分页读取MySQL数据
3 |
4 | ### 脚本背景
5 | **由于要在Linux上,远程读取mysql的表的数据,然后做一定清洗后,把数据上传至Hadoop集群中,使用Java写吧,感觉太麻烦了,得在Win上开发好,还得打成jar包,
6 | 上传到Linux上,如果那里出了问题,还得重复这样,非常不方便,那就用shell写一个吧,也不需要什么jdbc驱动包,只需要在Linux上装个MySQL的
7 | 客户端即可,用一行yum命令即可搞定,所以就花了点时间,封装了一个小脚本**
8 |
9 | ### 功能介绍
10 | **直接在Linux下使用shell脚本远程分页读取MySQL表的数据的一个小脚本,已测过读取600万+的数据
11 | 效率与jdbc相差无几**
12 |
13 | ### 脚本介绍
14 | **主要有三个脚本构成
1,page.sh 这是一主脚本,里面定义了分页的条件,大家看下便知
2,f.sh 一个小包装的脚本吧,里面会用sed去掉表头一些信息
3,port.sh 分页读取数据的执行脚本
**
15 |
16 |
17 | ### 如何使用?
18 | **使用非常简单,需要改下page.sh里面的查询字段,以及分页查询的数量,默认是10000,然后执行sh page.sh databaseName tableName传入数据库名和表名即可**
19 |
20 | ### 博客相关
21 |
22 | (1)[个人站点(2018之后,同步更新)](http://8090nixi.com/)
23 |
24 | (2)[iteye博客]()
25 |
26 |
27 |
28 |
29 |
30 |
31 | ### 我的公众号(woshigcs)
32 |
33 | 有问题可关注我的公众号留言咨询
34 |
35 | 
36 |
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/src/f.sh:
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1 |
2 | #第一个参数表名
3 | #第二个参数是start
4 | #第三个参数是offset
5 | #分页读取数据后,删除第一行表头,并写入一个文件中,文件名与表名一样
6 | sh port.sh $1 $2 $3 | sed '1d' >> tables/$1
7 |
8 | #删除无用的html字符
9 | #sed -i 's/<[^>]*>//g;/^$/d' tables/$1
10 | #删除无用的一些特殊符号
11 | #sed -i 's/[a-zA-Z\.():;><-]//g' tables/$1
12 |
13 |
14 |
15 |
16 |
17 |
18 |
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/src/page.sh:
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1 |
2 | #登陆mysql,负责查询某个表数据总量
3 | MYSQL=`which mysql`
4 | count=`$MYSQL -hmysqlhost --default-character-set=utf8 -P3306 -uname -ppwd <]*>//g;/^$/d' tables/$1
46 |
47 | #sed -i 's/[a-zA-Z\.():;><-]//g' tables/$1
48 |
49 |
50 |
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/src/port.sh:
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1 |
2 | #连接mysql
3 | # -h主机地址 -u用户名 -p密码
4 |
5 | #下面的语句,是登陆到数据库后,使用某个数据库,然后根据条件查询表
6 | MYSQL=`which mysql`
7 |
8 | $MYSQL -hmysqlhost --default-character-set=utf8 -P3306 -uname -ppwd <