Multi-Hop Table Retrieval for Open-Domain Text-to-SQL

arXiv:2402.10666v1 Announce Type: new
Abstract: Open-domain text-to-SQL is an important task that retrieves question-relevant tables from massive databases and then generates SQL. However, existing retrieval methods that retrieve in a single hop do not pay attention to the text-to-SQL challenge of schema linking, which is aligning the entities in the question with table entities, reflected in two aspects: similar irrelevant entity and domain mismatch entity. Therefore, we propose our method, the multi-hop table retrieval with rewrite and beam search (Murre). …

abstract arxiv attention challenge cs.cl databases domain massive question retrieval schema sql table tables text text-to-sql type