https://yaooqinn.github.io/tags/fine-tuning/ Recent content in Fine-Tuning on Kent Yao Hugo -- 0.157.0 en-us Tue, 26 May 2026 00:00:00 +0000 https://yaooqinn.github.io/posts/query-engines/llm-only-rewrite-doesnt-work/ Tue, 26 May 2026 00:00:00 +0000 https://yaooqinn.github.io/posts/query-engines/llm-only-rewrite-doesnt-work/ On TPC-H 10GB, asking GPT-4o to rewrite SQL takes mean execution time from 78.81s down to 74.92s — almost nothing. Swap in an open 14B model, feed it plans, add a reward, fine-tune once, and the same workload drops to 29.67s. Whether LLMs can help SQL rewriting is not a question about model strength; it’s a question about whether you’re willing to give the model the signals it actually needs.