当使用sql脚本交换任务，从mysql或者其他关系型数据库到iceberg进行交换任务时，不支持设置任务模式，比如覆盖或者追加。
Open
bug
feature-request
- Dominant language
- Java
- Stars
- 4.1k
- Forks
- 1.7k
- PR merge metrics
- No merged PRs in 30d
Description
### Search before asking
- [X] I had searched in the [issues](https://github.com/DTStack/chunjun/issues) and found no similar issues.
### What happened
从mysql或者其他关系型数据库到iceberg进行交换任务时，不支持设置任务模式，比如覆盖或者追加不生效。
### What you expected to happen
从mysql或者其他关系型数据库到iceberg进行交换任务时，不支持设置任务模式，比如覆盖或者追加不生效。
### How to reproduce
从mysql或者其他关系型数据库到iceberg进行交换任务时，设置任务模式，比如覆盖或者追加不生效。
### Anything else
_No response_
### Version
1.12_release
### Are you willing to submit PR?
- [X] Yes I am willing to submit a PR!
### Code of Conduct
- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)
Contributor guide
Assessment
This issue has not been assessed yet.