将MySQL的表数据全量导入clichhouse库中

一、环境

• tidb06 mysql5.7.32
• tidb05 clickhouse20.8.3.18

二、创建测试库表写入测试数据

tidb06库创建复制账户:

grant select, replication slave, replication client on *.* to 'click_rep'@'172.16.0.246' identified by 'jwts996';flush privileges;
query ok, 0 rows affected, 1 warning (0.00 sec)

tidb06库创建测试库表test01.tb2并且写入测试数据：

create table `tb2` (
`id` int(8) not null auto_increment, 
`username` varchar(20) collate utf8_unicode_ci not null,
`password` varchar(20) collate utf8_unicode_ci not null, 
`create_time` datetime not null default current_timestamp comment '创建时间',
primary key (`id`) #主键id
) engine=innodb auto_increment=0 default charset=utf8 collate=utf8_unicode_ci;

insert into tb2(username,password,create_time) values('tomcat', 'xiaohuahua',now());
insert into tb2(username,password,create_time) values('java', 'xiaohuahua',now());
root@tidb06 14:01:  [test01]> select * from tb2;
+----+----------+------------+---------------------+
| id | username | password   | create_time         |
+----+----------+------------+---------------------+
|  1 | tomcat   | xiaohuahua | 2021-07-21 14:01:50 |
|  2 | java     | xiaohuahua | 2021-07-21 14:01:59 |
+----+----------+------------+---------------------+
2 rows in set (0.00 sec)

clickhouse库的建表创建方法:

create table tb2 engine = mergetree partition by toyyyymm(create_time) order by create_time as select * from mysql('172.16.0.247:3306', 'test01', 'tb2', 'click_rep', 'jwts996');

提示:clichhouse表中要求必须至少包含一个时间字段

tidb05 :) create table tb2 engine = mergetree partition by toyyyymm(create_time) order by create_time as select * from mysql('172.16.0.247:3306', 'test01', 'tb2', 'click_rep', 'jwts996');

create table tb2
engine = mergetree
partition by toyyyymm(create_time)
order by create_time as
select *
from mysql('172.16.0.247:3306', 'test01', 'tb2', 'click_rep', 'jwts996')

ok.

0 rows in set. elapsed: 0.014 sec. 

tidb05 :) select * from tb2;

select *
from tb2

┌─id─┬─username─┬─password───┬─────────create_time─┐
│  1 │ tomcat   │ xiaohuahua │ 2021-07-21 14:01:50 │
│  2 │ java     │ xiaohuahua │ 2021-07-21 14:01:59 │
└────┴──────────┴────────────┴─────────────────────┘

2 rows in set. elapsed: 0.002 sec. 

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