Why A Query May be Faster the Second Time it Runs
Today, Kendra Little explains why a query may run faster the second time you run it.
2020-01-29
390 reads
Query Tuning
Optimize Your SQL by Reformulating the Spec
As SQL developers, we tend to think of performance tuning in terms of crafting the best table indices, avoiding scalar and table valued functions, and analyzing query plans (among other things). But sometimes going back to the spec and applying some properties of elementary math can be the best way to begin to improve performance of SQL queries which implement mathematical formulas. This article is a case study of how I used this technique to optimize my SQL implementation of the Inverse Simpson Index.
2019-09-12
2,802 reads
2019-11-01 (first published: 2017-09-11)
4,949 reads
Blogs
What Agent Jobs are Running??
By gbargsley
Do you run SQL Agent Jobs in your environment? Do you know what is...
Unboxing SQL Clone 2020 for a PoC
By Steve Jones
When I got a new machine, I had SQL Clone on my old machine,...
Daily Coping 4 Aug 2020
By Steve Jones
I started to add a daily coping tip to the SQLServerCentral newsletter and to...
Forums
Extended Events
I have set up an extended event to capture the queries users may be...
Script logins and all permissions: no longer supported in SSMS generate script?
Okay, maybe I've just gone crazy but I was certain it used to be...
Recursive Select runs slow
Hello, I have a recursive Select that runs ultra slow. My test table has...
Ask SSC