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## 介绍
- 支持多数据源， < br >
- 可动态扩展
## 数据源类型
< br >
 < br >
 < br >
```text
表aj_report.gaea_dict_item， ：
表aj_report.gaea_dict_item, item_extend字段是下拉选择后动态表单渲染的json数据
```
## 操作
- 只有测试通过的数据源才可以保存
## 扩展
- 以kudu impala 为例， ， ，
