#text-to-SQL

LangChain Adds SchemagateRetriever: On-Demand Table Retrieval Cuts Text-to-SQL Prompts by 92.9%

LangChain docs add SchemagateRetriever: retrieves only the tables needed for text-to-SQL with permission filtering, cutting median prompt size by 92.9% on Spider 2.0 large schemas via offline BM25 selection with no model calls.