HI-SQL: Optimizing Text-to-SQL Systems through Dynamic Hint Integration
This work addresses challenges in text-to-SQL systems for users querying databases without SQL expertise, offering an incremental improvement over existing methods.
The paper tackles the problem of complex query handling in text-to-SQL systems by proposing HI-SQL, which uses dynamic hints from historical logs to guide SQL generation, resulting in improved accuracy and efficiency on benchmark datasets.
Text-to-SQL generation bridges the gap between natural language and databases, enabling users to query data without requiring SQL expertise. While large language models (LLMs) have significantly advanced the field, challenges remain in handling complex queries that involve multi-table joins, nested conditions, and intricate operations. Existing methods often rely on multi-step pipelines that incur high computational costs, increase latency, and are prone to error propagation. To address these limitations, we propose HI-SQL, a pipeline that incorporates a novel hint generation mechanism utilizing historical query logs to guide SQL generation. By analyzing prior queries, our method generates contextual hints that focus on handling the complexities of multi-table and nested operations. These hints are seamlessly integrated into the SQL generation process, eliminating the need for costly multi-step approaches and reducing reliance on human-crafted prompts. Experimental evaluations on multiple benchmark datasets demonstrate that our approach significantly improves query accuracy of LLM-generated queries while ensuring efficiency in terms of LLM calls and latency, offering a robust and practical solution for enhancing Text-to-SQL systems.