https://yaooqinn.github.io/tags/prompt-engineering/ Recent content in Prompt-Engineering on Kent Yao Hugo -- 0.157.0 en-us Wed, 27 May 2026 00:00:00 +0000 https://yaooqinn.github.io/posts/query-engines/prompt-anatomy-for-plan-generation/ Wed, 27 May 2026 00:00:00 +0000 https://yaooqinn.github.io/posts/query-engines/prompt-anatomy-for-plan-generation/ DBPlanBench gets GPT-5 to deliver a 4.78× geometric-mean speedup on DataFusion TPC-H SF10 by letting the model rewrite physical plans directly. I read its sql_optimization_prompts.py end to end — 120 lines, 30 of methodology, 90 of contract. That ratio is the most transferable thing in the paper.