Weaviate paper: LLMs misuse LIKE instead of search operators when querying databases

CShorten30 · x · 2026-09-14

A Weaviate paper, Querying Databases with Function Calling, proposes a unified tool definition for database querying supporting search, filters, aggregation and multi-collection routing. Using a Gorilla-adapted synthetic pipeline (DBGorilla benchmark, compared to BIRD/Spider/WikiSQL) across 8 LLMs from 5 families, they show Claude 3.5 Sonnet and GPT-4o handle it well — but LLMs frequently use LIKE or exact text match operators for natural language commands requiring a SEARCH operator.

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