Who are these scripts for? You need to troubleshoot performance problems with SQL Server, and you need to do it now. You don't have time to track down a bunch of DMVs, figure out Extended Events, ...

The error “Column is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause” appears when a query uses ...

Abstract: Analytic workloads on terabyte data-sets are often run in the cloud, where application and storage servers are separate and connected via network. In order to saturate the storage bandwidth ...

Data isn't just oil anymore; it’s the oxygen your enterprise breathes. In 2026, the volume of data flowing through the average mid-to-large enterprise isn't just massive—it’s complex, messy, and ...

Abstract: We study a pull-based status update communication model where a source node submits update packets to a channel with random transmission delay, at times requested by a remote destination ...

This article was written in collaboration with Bohan Zhang and originally appeared on the OtterTune website. In this article, we’ll dive into MVCC: what it is, how PostgreSQL does it, and why it is ...

Part of the SQL Server 2022 blog series. Cardinality estimation (CE) is a process used by the query optimizer to estimate the number of rows returned by a query or sub-part of a query. These estimates ...