Gethyn Ellis

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Blogs

Simple Talks Episode 9–Data masking and subsetting

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The episode on data masking and subetting is out. You can see it here:...

T-SQL Tuesday #180: Avoid Perfect for Good Enough

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I'm listening to Effortless by Greg McKeon (link to author's page) through Audible.com. He...

Book Review – Humanizing Data Strategy by Tiankai Feng

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This book was making its rounds on social media, and the concept seems interesting...

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Forums

Does SSRS Report with Stored Procedure execute SQL string?

By danyeungw

I declare @Where based on the input parameter in the stored procedure. Set @SQL...

SQL Server Constrained Delegation

By cw255

Hi, hoping someone can help. We're in the process of migrating to a new...

Get Sum and Last month sum

By GrassHopper

I want to get the sum and I want to get the sum of...

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Question of the Day

Comparing Images

I am building an ETL process between these tables in SQL Server 2022 set to 160 compatibility level: 

CREATE TABLE Image_Staging
( imageid     INT NOT NULL CONSTRAINT Image_StagingPK PRIMARY KEY
, imagestatus TINYINT
, imagebinary IMAGE);
GO

CREATE TABLE Images
( imageid       INT NOT NULL CONSTRAINT ImagesPK PRIMARY KEY
, imagestatus   TINYINT
, imagemodified DATETIME
, imagebinary   IMAGE);
GO
I want to run this query to check if the images already loaded exist. This will help me decide if I need to insert or update an image. What happens with this query? 
SELECT i.imageid
FROM
  dbo.Image_Staging AS ist
  INNER JOIN dbo.Images AS i
    ON ist.imagebinary = i.imagebinary;

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