### What problem does this PR solve?
Close#12768.
This PR adds OceanBase support to RAGFlow’s Text-to-SQL (ExeSQL)
component.
OceanBase is integrated via MySQL compatibility mode, and the UI
`db_type` options are updated accordingly.
### Type of change
- [ ] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [ ] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):
### Changes
**Backend**
- Add `oceanbase` `db_type` validation and connection logic in
`exesql.py` and reuse existing MySQL compatibility mode
**Frontend**
- Add OceanBase option to the ExeSQL `db_type` selector
### How to test
1. Configure OceanBase connection in ExeSQL node
(host/port/user/password/database)
2. Input: “Show 10 rows from test table”
3. Generated SQL: `SELECT * FROM test LIMIT 10;`
4. Query executes successfully and results are returned
### Screenshots
- ExeSQL db_type includes OceanBase
<img width="649" height="1015" alt="2"
src="https://github.com/user-attachments/assets/e0a5f7b9-e282-402a-8639-64c1aef8fce6"
/>
- ExeSQL test OceanBase connection
<img width="2247" height="1140" alt="test_ob"
src="https://github.com/user-attachments/assets/f16ebd93-b48e-4d18-b53f-8496581e755d"
/>
- Query results from OceanBase shown in UI
<img width="2550" height="1351" alt="1"
src="https://github.com/user-attachments/assets/b44163dc-baab-420d-b31e-b644bdcb77a9"
/>
## Summary
Fixes#12631
When SQL query results contain NaN (Not a Number) or Infinity values
(e.g., from division by zero or other calculations), the JSON
serialization would fail because **NaN and Infinity are not valid JSON
values**.
This caused the agent interface to show 'undefined' error, as described
in the issue where `EXAMINE_TIMES` became `NaN` and broke the JSON
parsing.
## Root Cause
The `convert_decimals` function in `exesql.py` was only handling
`Decimal` types, but not `float` values that could be `NaN` or
`Infinity`.
When these invalid JSON values were serialized:
```json
{"EXAMINE_TIMES": NaN} // Invalid JSON!
```
The frontend JSON parser would fail, causing the 'undefined' error.
## Solution
Extended `convert_decimals` to detect `float` values and convert
`NaN`/`Infinity` to `null` before JSON serialization:
```python
if isinstance(obj, float):
if math.isnan(obj) or math.isinf(obj):
return None
return obj
```
This ensures all SQL results can be properly serialized to valid JSON.
---
This is a Gittensor contribution.
gittensor:user:GlobalStar117
Co-authored-by: GlobalStar117 <GlobalStar117@users.noreply.github.com>
Co-authored-by: Jin Hai <haijin.chn@gmail.com>
Co-authored-by: Zhichang Yu <yuzhichang@gmail.com>
### What problem does this PR solve?
Add mechanism to check cancellation in Agent.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
issue:
[#10296](https://github.com/infiniflow/ragflow/issues/10296)
change:
- ExeSQL: support connecting to Trino.
- Validation: password can be empty only when db_type === "trino";
all other database types keep the existing requirement (non-empty).
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
issue：
#10326
change：
remove ibm-db dependency and refactor import order
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
issue：#5617
change：add IBM DB2 support in ExeSQL
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fix invalid COMPONENT_EXEC_TIMEOUT. #10273
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
This PR fixes incorrect naming for PostgreSQL usage by replacing all
instances of `postgresql` with the correct `postgres` in the `db_type`
field. This resolves potential configuration errors and ensures
consistency when specifying the database type.
Also fixed handling of None for `get_queue_length`
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Co-authored-by: cucusenok <BP-116: updated readme.md>
### What problem does this PR solve?
Before executing the SQL, remove tags in the format [ID: number] to
avoid execution errors.
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Co-authored-by: wangyazhou <wangyazhou@sdibd.cn>
### What problem does this PR solve?
#9082#6365
<u> **WARNING: it's not compatible with the older version of `Agent`
module, which means that `Agent` from older versions can not work
anymore.**</u>
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
