mysql导入redis

                                                                 将mysql中数据库指定表导入redis

如何将mysql中某个数据库中的表数据快速导入redis?

以下将演示将本地127.0.0.1中数据库test中的表t_abc导入本地redis中。步骤如下:

1.建表语句:

 
CREATE TABLE `t_abc` (
  `id` int(10) NOT NULL AUTO_INCREMENT,
  `name` varchar(100) DEFAULT NULL,
  `orderNo` varchar(100) DEFAULT NULL,
  `createtime` datetime DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=131073 DEFAULT CHARSET=gbk

 

2.插入测试数据:

INSERT INTO `test`.`t_abc`(NAME,orderNo,createTime) VALUES ('zhangsan1','NO000001',NOW());

执行多次以下sql,可以快速导入数据:

INSERT t_abc(NAME,orderNo,createTime) SELECT t.name,t.orderNo,t.createTime FROM t_abc t;

 

3.mysql导入redis语句:

mysql -hlocalhost -uroot -proot -Dtest --default-character-set=utf8 --skip-column-names --raw <mysqltoredis.sql | redis-cli -h 127.0.0.1 -p 6379 -a 111111 –pipe

 

说明:

1.-h表示数据库地址,-u表示数据库用户名,-p表示数据库密码,-D表示哪个数据库

2. redis-cli -h 127.0.0.1 -p 6379 -a 111111 –pipe ,表示使用pipe管道连接redis

3.mysqltoredis.sql需要自己编写:

注意:1.因为RESP协议中的分隔符为在Linux下是\r\n,而在Windows下则为\n

           2.第一行中的*10\n,10代表resp协议中数组的个数,\n表示换行符

           3.在Linux下,最后变成了\r,而在Windows下就直接什么都没有了。

           4.其中表t_abc为test数据库中的表,需要导入那列就查询哪列

 

在window中如下:

SELECT CONCAT(
   "*10\n",
   '$',LENGTH(redis_cmd),'\n',redis_cmd,'\n',
   '$',LENGTH(redis_key),'\n',redis_key,'\n',
   '$',LENGTH(hkey1),'\n',hkey1,'\n','$',LENGTH(hval1),'\n',hval1,'\n',
   '$',LENGTH(hkey2),'\n',hkey2,'\n','$',LENGTH(hval2),'\n',hval2,'\n',
   '$',LENGTH(hkey3),'\n',hkey3,'\n','$',LENGTH(hval3),'\n',hval3,'\n',
   '$',LENGTH(hkey4),'\n',hkey4,'\n','$',LENGTH(hval4),'\n',hval4
)FROM(
   SELECT 'HMSET' AS redis_cmd,
   CONCAT_WS(':','order', id) AS redis_key,
   'id' AS hkey1, NAME AS hval1,
   'name' AS hkey2, NAME AS hval2,
   'orderNo' AS hkey3, orderNo AS hval3,
   'createtime' AS hkey4, UNIX_TIMESTAMP(createtime) AS hval4
   FROM t_abc
)AS t

 

在linux中如下:

SELECT CONCAT(
   "*10\r\n",
   '$',LENGTH(redis_cmd),'\r\n',redis_cmd,'\r\n',
   '$',LENGTH(redis_key),'\r\n',redis_key,'\r\n',
   '$',LENGTH(hkey1),'\r\n',hkey1,'\r\n','$',LENGTH(hval1),'\r\n',hval1,'\r\n',
   '$',LENGTH(hkey2),'\r\n',hkey2,'\r\n','$',LENGTH(hval2),'\r\n',hval2,'\r\n',
   '$',LENGTH(hkey3),'\r\n',hkey3,'\r\n','$',LENGTH(hval3),'\r\n',hval3,'\r\n',
   '$',LENGTH(hkey4),'\r\n',hkey4,'\r\n','$',LENGTH(hval4),'\r\n',hval4,'\r'
)FROM(
   SELECT 'HMSET' AS redis_cmd,
   CONCAT_WS(':','order', id) AS redis_key,
   'id' AS hkey1, NAME AS hval1,
   'name' AS hkey2, NAME AS hval2,
   'orderNo' AS hkey3, orderNo AS hval3,
   'createtime' AS hkey4, createtime AS hval4
   FROM t_abc
)AS t

 

 

4.常见问题:

ERR Protocol error: expected '$', got ' '

报这个错,需要检查第一行中*10\n 数字和数组的参数是否匹配

 

posted on 2019-01-04 11:22  sgyi06  阅读(1694)  评论(0编辑  收藏  举报

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