zlzforever / ClickHouseMigrator

Help to migrate data to ClickHouse, create database and table auto.

ClickHouseMigrator

Help to migrate data to ClickHouse, create database and table auto.

Support excel, mysql, sqlserver now

DEVELOP ENVIRONMENT

• Visual Studio 2019(16.8 or later)
• .NET 5.0 or later

OPTIONS

--src            : data source: MySql, SqlServer, Excel etc
--src-host       : host of data source, for example: 192.168.90.100, **default value: 127.0.0.1**
--src-port       : port of data source, for example: 3306
--src-user       : user of data source
--src-password   : password of data source
--src-database   : database of data source
--src-table      : table of data source
--host           : Clickhouse host: 192.168.90.101, **default value: 127.0.0.1**
--port           : Clickhouse port, for example: 9000, **default value: 9000**
--user           : Clickhouse user
--password       : Clickhouse password
--database       : Clickhouse database, if this arg is null, will use --src-database as target database name
--table          : Clickhouse table, if this arg is null, will use --src-table as target table name
--thread         : how many thread use to insert data to ClickHouse, **default value: process count of your machine**
--batch          : how many rows insert to ClickHouse one time, **default value: 10000**
--drop-table     : whether drop the exits table in clickhouse before migrating, **default value: false**
--file           : File path of Excel etc
--sheets         : Which sheets will be migrated, columns are same in every sheet, used like: Sheet1,Sheet2,Sheet3
--start-row      : 
--lowercase      : ignore the word case in clickhouse, **default value: true**

HOW TO USE

• install .NET 5 follow: https://dotnet.microsoft.com/download/dotnet/5.0

• on windows run below command in command prompt, and in terminal for linux

    dotnet tool install -g ClickHouseMigrator
  

• the migrate tool named chm, so run tool like below

  > chm --src mysql --src-host localhost --src-port 3306 --src-user root --src-password 1qazZAQ! \
    --src-database test --src-table user1000w --drop-table true
  

SHOW

• 3.2 GHz 8-Core Intel Xeon W
• 32 G
• 1T SSD

ClickHouse command

CREATE TABLE test.user
ENGINE = MergeTree
ORDER BY id AS
SELECT *
FROM mysql('192.168.192.2:3306', 'test', 'user1000w', 'root', '1qazZAQ!')

Elapsed: 27.965 sec. Processed 18.68 million rows, 895.49 MB (667.94 thousand rows/s., 32.02 MB/s.)

ClickHouseMigrator

Elapsed 63 sec. Processed 18627236 rows (295670 rows/s.)

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AREAS FOR IMPROVEMENT

SQL Server -> Adjust Decimal types using source precision & scale

Email: [e-mail]