Query Hash and Query Plan Hash Mapping

The problem
As a fan of Dynamic Management Objects (DMOs), Query Store and Extended Events, I often work with the Query Hash and Query Plan Hash (I’ll refer to them...

Daily Coping 8 Apr 2022

I started to add a daily coping tip to the SQLServerCentral newsletter and to the Community Circle, which is helping me deal with the issues in the world. I’m...

Quick Tip: Remove CONVERTCAST from your WHEREJOIN clauses

Quick Tip Remove CONVERT/CAST from your WHERE clauses and JOINS when comparing to variables of different data types. Set their data types to match your table definitions before using...

The Summit is Back in Person

Registration for the Data Community Summit opens today! You can sign up and come to Seattle in November with all the other data platform pros that you’ve missed seeing...

Daily Coping 7 Apr 2022

I started to add a daily coping tip to the SQLServerCentral newsletter and to the Community Circle, which is helping me deal with the issues in the world. I’m...

KEEP PLAN Demystified

Foreword
I was always wondering what the KEEP PLAN hint does. The documentation isn’t very specific (emphasis mine):

Forces the Query Optimizer to relax the estimated recompile threshold for a query.

In...

Speaking at SQL Saturday Jacksonville 2022

SQL Saturday is coming back to Jacksonville this May. I’m excited to go as I’ve like the city, but I’ve never been to this particular SQL Saturday. On May...

Daily Coping 6 Apr 2022

I started to add a daily coping tip to the SQLServerCentral newsletter and to the Community Circle, which is helping me deal with the issues in the world. I’m...

Flyway Mistakes

I have been doing some testing with Redgate’s Flyway Desktop as a new way of managing code for databases. However, just like Git, I appreciate clients, but I want...

If I can’t use PWDENCRYPT, how am I supposed to use HASHBYTES?

For this week, here is a short post about reinventing the wheel. An interesting conversation happened on Twitter where Dave Dustin asked: “Does anybody have an example of using...