Abstract: As the critical task in query optimization, cardinality estimation is fulfilled by learning the joint probability distribution of table attributes in most of the existing data-driven methods ...

SQL Server 2025 delivers major performance upgrades alongside licensing changes that can reshape both operational speed and budget strategy. Smarter query execution, refined CPU scheduling, and better ...

This article explores how performance-focused code review works, what reviewers should look for, and how teams can prevent slowdowns long before users complain.

Abstract: This work addresses the problem of developing high-performance relational databases through the use of large language models. Language model selection strategies for query optimization tasks ...

Data: 100K customers, 10K products, 20 categories, 2M orders, 5M order_items. All deterministic — identical data in both databases. Query: Weekly revenue grouped by category × customer_tier × customer ...

when Extract(month from date '2005-08-10') between 7 and 9 then 'Q1' when Extract(month from date '2005-08-10') between 10 and 12 then 'Q2' when Extract(month from date '2005-08-10') between 1 and 3 ...