将MySQL的表数据全量导入clichhouse库中
作者：运维之美
这篇文章主要介绍了将MySQL的表数据全量导入clichhouse库中，详细介绍全量导出MySQL数据到clickhouse表的相关内容，需要的小伙伴可以参考一下
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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