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Author

Surajit Chaudhuri

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Preprint Oct 2026

Query Performance Tuning with Optimal Exploration of Optimizer Cost Model Parameter Space

Modern query optimizers use analytical cost models to estimate the cost of a given query plan. Such cost models are typically functions of a set of"cost units"that specify unit CPU cost when processing a row or unit IO cost when accessing a disk page. These cost units are traditionally viewed as platform-dependent cons...

Wentao Wu, Xiao-Ying Wang, Vivek R. Narasayya et al. · 0 citations
Aug 2026

Verified LLM-Based Query Rewriting for Microsoft SQL Server

An LLM-based query tuning tool for Microsoft SQL Server that takes as input a query, tuning constraints such as minimum required improvement and time budget, and automatically recommends semantically equivalent query rewrites that improve the execution time of the query.

Kukjin Lee, Anshuman Dutt, Vivek R. Narasayya et al. · 0 citations

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