[Feature Request]: Support Rank feature query #2309
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feature request
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JinHai-CN
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Jan 22, 2025
### What problem does this PR solve?
Insert:
```
`json` string is required for rank features column:
[{"Tag1":0.1},{"Tag2":0.2}]
```
Query:
```
SELECT * FROM table SEARCH MATCH TEXT ('doc', 'second text multiple', 'rank_features= field^tag1^1.0,field^tag2^1.0;topn=10');
```
Issue link:#2309
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
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Is there an existing issue for the same feature request?
Is your feature request related to a problem?
No response
Describe the feature you'd like
Rank Feature Query in ES is used in many enterprise scenarios. Infinity will provide similar feature accordingly.
A scenario is to provide hierarchical knowledge base in RAGFlow, the result is a combination of knowledge base with higher quality or higher priority with other general knowledge bases.
In order to support this feature, the column should have type of
rank_featureorrank_features.rank_featurecan only support positive numeric values whilerank_featurescan only support Map where the key must be string type and value must be positive numeric types that can be represented using 16bit.The text was updated successfully, but these errors were encountered: