Outdated statistics in SQL Server can slow a query even when its code has not changed. On SQL Server 2025 with the legacy estimator, a stale statistic sent one join to 120,043 logical reads, and a targeted update brought it down to 18,220. Auto update helps, but it waits for a threshold, it samples, and it knows nothing about the rows that arrived today.
SQL SERVER – Execution Plans and Indexing Strategies – Quick Guide
Let us learn today in this quick guide Execution Plans and Indexing Strategies. Your comments are welcome
SQL SERVER – Catching Non-SARGable Queries in Action
If you ever wondered why a query that looks harmless is performing poorly despite having indexes in place, the answer could non-SARGable queries.
SQL SERVER Performance Tuning: Catching Key Lookup in Action
In this blog post, we’ll explore what a Key Lookup is, how to spot it, and most importantly, how to eliminate it using a covering index.
Majoring in the Minors in SQL Server Performance Tuning
We’ll explore how to avoid this common pitfall & Focus the areas that matter for performance improvements. Avoid majoring in the minors.
Optimizer Timeouts: Reason for Early Termination in a Plan
Diagnose optimizer early termination in SQL Server plans, find cached timeouts with XML, and simplify queries using measured evidence.
Oversized varchar Columns and Inflated Memory Grants
Investigate oversized varchar declarations, compare sort memory grants, and narrow string columns safely without losing valid data.