MCTS-SQL: An Effective Framework for Text-to-SQL with Monte Carlo Tree Search

• URL: http://arxiv.org/abs/2501.16607v1
• Date: Tue, 28 Jan 2025 00:52:23 GMT
• Title: MCTS-SQL: An Effective Framework for Text-to-SQL with Monte Carlo Tree Search
• Authors: Shuozhi Yuan, Liming Chen, Miaomiao Yuan, Jin Zhao, Haoran Peng, Wenming Guo,
• Abstract summary: We present a novel approach to converting natural language queries into database queries.<n>We use Monte Carlo Tree Search (MCTS) and a self-refinement mechanism to enhance accuracy and reliability.<n> Experimental results show that MCTS-IDER achieves state-of-the-art performance.
• Score: 3.521199751827158
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Text-to-SQL is a fundamental and longstanding problem in the NLP area, aiming at converting natural language queries into SQL, enabling non-expert users to operate databases. Recent advances in LLM have greatly improved text-to-SQL performance. However, challenges persist, especially when dealing with complex user queries. Current approaches (e.g., COT prompting and multi-agent frameworks) rely on the ability of models to plan and generate SQL autonomously, but controlling performance remains difficult. In addition, LLMs are still prone to hallucinations. To alleviate these challenges, we designed a novel MCTS-SQL to guide SQL generation iteratively. The approach generates SQL queries through Monte Carlo Tree Search (MCTS) and a heuristic self-refinement mechanism are used to enhance accuracy and reliability. Key components include a schema selector for extracting relevant information and an MCTS-based generator for iterative query refinement. Experimental results from the SPIDER and BIRD benchmarks show that MCTS-SQL achieves state-of-the-art performance. Specifically, on the BIRD development dataset, MCTS-SQL achieves an Execution (EX) accuracy of 69.40% using GPT-4o as the base model and a significant improvement when dealing with challenging tasks, with an EX of 51.48%, which is 3.41% higher than the existing method.

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