Text-to-SQL based on Large Language Models and Database Keyword Search

• URL: http://arxiv.org/abs/2501.13594v1
• Date: Thu, 23 Jan 2025 12:03:29 GMT
• Title: Text-to-SQL based on Large Language Models and Database Keyword Search
• Authors: Eduardo R. Nascimento, Caio Viktor S. Avila, Yenier T. Izquierdo, Grettel M. García, Lucas Feijó L. Andrade, Michelle S. P. Facina, Melissa Lemos, Marco A. Casanova,
• Abstract summary: This paper proposes a strategy to compile Natural Language (NL) questions intosql queries. The strategy incorporates a dynamic few-shot examples strategy and leverages the services provided by a database keyword search (KwS) platform. Experiments show that the strategy achieves an accuracy on the real-world relational database that surpasses state-of-the-art approaches.
• Score: 0.0
• License:
• Abstract: Text-to-SQL prompt strategies based on Large Language Models (LLMs) achieve remarkable performance on well-known benchmarks. However, when applied to real-world databases, their performance is significantly less than for these benchmarks, especially for Natural Language (NL) questions requiring complex filters and joins to be processed. This paper then proposes a strategy to compile NL questions into SQL queries that incorporates a dynamic few-shot examples strategy and leverages the services provided by a database keyword search (KwS) platform. The paper details how the precision and recall of the schema-linking process are improved with the help of the examples provided and the keyword-matching service that the KwS platform offers. Then, it shows how the KwS platform can be used to synthesize a view that captures the joins required to process an input NL question and thereby simplify the SQL query compilation step. The paper includes experiments with a real-world relational database to assess the performance of the proposed strategy. The experiments suggest that the strategy achieves an accuracy on the real-world relational database that surpasses state-of-the-art approaches. The paper concludes by discussing the results obtained.

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