Edward Haynes

Over 20 years experience in SQL Server development & administration, and creator of "Query Shaping" an innovative SQL query optimisation technique.
Find me on LinkedIn:
https://www.linkedin.com/in/edward-haynes-sql/

SQLServerCentral Article

Query Performance Diagnostics with sp_PerfSQ

This article discusses sp_PerfSQ a diagnostic tool designed to quantify performance features of database queries with active requests. It includes a behavioural parser and can assist in troubleshooting complex performance issues.

(10)

You rated this post out of 5. Change rating

2021-12-24 (first published: )

11,531 reads

Technical Article

sp_PerfSQ

A diagnostic tool for identifying Performance features of active SQL Queries. It collects performance detail from DMVs for queries with executing requests and is designed to demonstrate and quantify Query Shaping optimisation techniques by: quantifying query workload and throughput characteristics providing behavioural descriptors of potential performance inhibitors - refer column ThrottlePotential The ThrottlePotential column is […]

(3)

You rated this post out of 5. Change rating

2019-11-07

4,196 reads

Blogs

Narrow Task Decomposition in AI Pipeline Agents

By

A nightly load into sales_fact fails. Ask an orchestrating agent to break down the...

Car Update: August 2026

By

It’s been some time since I provided a car update, so I decided to...

Microsoft Fabric OneLake Shortcuts: When to Use Them and When Not To

By

An architecture scenario Imagine separate Sales, Finance, Shared Data, and Executive Analytics workspaces. Sales...

Read the latest Blogs

Forums

Searching for my own posts

By pietlinden

I have a really stupid question... Is there an easy way to search for...

How to Work with On-Premises AI Models to Generate T-SQL Code

By Daniel Calbimonte

Comments posted to this topic are about the item How to Work with On-Premises...

Escaping Strings

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Escaping Strings

Visit the forum

Question of the Day

Escaping Strings

The STRING_ESCAPE() function requires 2 parameters in SQL Server 2025. The first is a string of text and the second is the type of escape rules being used. What are the options for the second parameter?

See possible answers