MES-ETL/ConsoleApp2/README.md
2024-01-04 09:00:44 +08:00

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## 说明
使用该程序来对MyDumper导出的CSV数据进行读取转换然后导出到其他数据库中。
1. 用MyDumper从数据库导出CSV数据
使用MyDumper Docker镜像
```sh
docker run --rm --net=host -v D:/Dump:/home/backup mydumper/mydumper:v0.15.2-6 mydumper `
-h 127.0.0.1 -P 33306 -u root -p 123456 `
-B cferp_test --no-schemas --csv --hex-blob `
-o /home/backup
```
将挂载卷,数据库连接和输出目录替换
不导出数据库结构(--no-schemas)
导出完的目录下应当包含.sql文件以及.dat文件
2. 在Program.cs中修改`CsvOptions`配置
```cs
host.Services.Configure<CsvOptions>(option =>
{
option.Delimiter = ",";
option.QuoteChar = '"';
option.InputDir = "D:/Dump/Test";
});
```
将`option.InputDir`配置为MyDumper导出的数据目录
3. 在Program.cs中修改`DatabaseOutputOptions`配置
```cs
host.Services.Configure<DatabaseOutputOptions>(options =>
{
options.ConnectionString = new MySqlConnectionStringBuilder
{
Server = "127.0.0.1",
Port = 33306,
Database = "cferp_test_1",
UserID = "root",
Password = "123456",
MaximumPoolSize = 50,
}.ConnectionString;
options.MaxTask = 16;
options.FlushCount = 200;
});
```
将`MySqlConnectionStringBuilder`的属性修改为程序要导出至的数据库
> 后续将这些配置通过命令行传递
4. 运行程序
> 注意,测试数据库`cferp_test`中的`order_process_step`表存在外键,如果要导出到和测试库同结构的数据库,记得先把外键删除。