Divo: Learning a Stable and Effective Query Optimizer with a Diverse Workload

Summary: Divo tackles LQO brittleness on highly diverse workloads via template-evolving query generation, a two-phase training pipeline with 100K+ static plan experiences, and a diversity-aware probabilistic loss. The result is a more stable optimizer on PostgreSQL mixed workloads, yielding 1.3x over PG and far outperforming prior LQOs. (summarized by gpt-5-mini on Apr 11 2026)

Paper ID: 7468
Venue: SIGMOD
Year: 2026
Pagerank: 4.1905499e-05
Overall Rank: 10,156 | 29.42%
DOI: 10.1145/3786641

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Rank	Citing Paper	Year	Venue	Pagerank

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Showing 19 of 19 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank	Cited Paper	Year	Venue	Pagerank
71	How Good Are Query Optimizers, Really?	2016	VLDB	0.00059446482
329	Neo: A Learned Query Optimizer	2019	VLDB	0.00027301488
405	Massive Stochastic Testing of SQL	1998	VLDB	0.00024046204
634	Bao: Making Learned Query Optimization Practical	2021	SIGMOD	0.00018844568
779	QTune: A Query-Aware Database Tuning System with Deep Reinforcement Learning	2019	VLDB	0.00016719473
1,638	Cardinality Estimation in DBMS: A Comprehensive Benchmark Evaluation	2022	VLDB	0.00011050093
2,090	Balsa: Learning a Query Optimizer Without Expert Demonstrations	2022	SIGMOD	9.5668285e-05
2,222	SkinnerDB: Regret-Bounded Query Evaluation via Reinforcement Learning	2019	SIGMOD	9.2598438e-05
2,280	Generating Targeted Queries for Database Testing	2008	SIGMOD	9.1247368e-05
2,937	DSB: A Decision Support Benchmark for Workload-Driven and Traditional Database Systems	2021	VLDB	7.8552033e-05
3,167	QueryFormer: A Tree Transformer Model for Query Plan Representation	2022	VLDB	7.4561078e-05
3,236	TPC-DS, Taking Decision Support Benchmarking to the Next Level	2002	SIGMOD	7.3294564e-05
3,345	Lero: A Learning-to-Rank Query Optimizer	2023	VLDB	7.1908499e-05
3,729	Cost-based or Learning-based? A Hybrid Query Optimizer for Query Plan Selection	2022	VLDB	6.8078013e-05
4,464	LOGER: A Learned Optimizer towards Generating Efficient and Robust Query Execution Plans	2023	VLDB	6.1552798e-05
5,289	LearnedSQLGen: Constraint-aware SQL Generation using Reinforcement Learning	2022	SIGMOD	5.5790771e-05
5,931	FASTgres: Making Learned Query Optimizer Hinting Effective	2023	VLDB	5.2632167e-05
5,941	Eraser: Eliminating Performance Regression on Learned Query Optimizer	2024	VLDB	5.2594013e-05
9,350	LIMAO: A Framework for Lifelong Modular Learned Query Optimization	2025	VLDB	4.3494621e-05

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