QueryBrew: System-Agnostic SQL-to-SQL Query Optimization
Summary: QueryBrew decouples optimization from database engines via SQL-to-SQL rewriting: Umbra optimizes arbitrary queries and emits operator-oriented SQL. It transfers advanced unnesting, simplification, and join ordering to PostgreSQL, DuckDB, ClickHouse, and SQL Server without engine changes. (summarized by gpt-5.6-luna on Aug 28 2026)
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Authors
- 1. Tobias Schmidt (Technical University of Munich)
- 2. Maximilian Reif (Technical University of Munich)
- 3. Altan Birler (Technical University of Munich)
- 4. Thomas Neumann (Technical University of Munich)
BibTeX Citation
@article{schmidt_vldb26,
title = {{QueryBrew: System-Agnostic SQL-to-SQL Query Optimization}},
author = {Schmidt, Tobias and Reif, Maximilian and Birler, Altan and Neumann, Thomas},
journal = {PVLDB},
series = {{VLDB} '26},
volume = {19},
number = {12},
pages = {4494--4497},
doi = {10.14778/3827998.3828048},
url = {https://doi.org/10.14778/3827998.3828048},
year = {2026}
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Outgoing Citations (Sorted by Pagerank)
Showing 7 of 7 cited papers.
Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.
| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 373 | Umbra: A Disk-Based System with In-Memory Performance | 2020 | CIDR | 0.00019711632 |
| 746 | Spanner: Becoming a SQL System | 2017 | SIGMOD | 0.00014286107 |
| 1,186 | Adaptive Optimization of Very Large Join Queries | 2018 | SIGMOD | 0.0001160797 |
| 3,336 | GenRewrite: Query Rewriting via Large Language Models | 2026 | SIGMOD | 7.4137763e-05 |
| 4,108 | QueryBooster: Improving SQL Performance Using Middleware Services for Human-Centered Query Rewriting | 2023 | VLDB | 6.8020689e-05 |
| 5,891 | Unified Query Optimization in the Fabric Data Warehouse | 2024 | SIGMOD | 5.9570227e-05 |
| 6,576 | Towards Query Optimizer as a Service (QOaaS) in a Unified LakeHouse Ecosystem: Can One QO Rule Them All? | 2025 | CIDR | 5.7448779e-05 |
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