Arun Sirpal

I am a Senior DBA with interest in MS technology especially SQL Server and Azure. During 2015 I was mentored by Paul Randal – Data Platform (SQL Server) MVP and during 2016 I completed my SQLskills Immersion training on Internals and Performance Tuning. When I am not working I am in the gym burning calories.

Databases and AI Agents

As part of my wider work exploring Claude Code and AI-assisted database engineering, I have been looking at how AI can support SQL Server operations. A failed job, missed...

2026-06-03 (first published: )

503 reads

Blog Post

Claude Context Window

Every Claude conversation has a context window. It is the total amount of text Claude can work with in a single chat — your messages, its replies, uploaded files,...

2026-05-30 (first published: )

25 reads

Blog Post

Claude Desktop

Claude is more than a chat window. The desktop experience includes structured workspaces, generated outputs, integrations, execution capabilities, memory and reusable workflows. This is a quick introduction to some...

2026-05-26

22 reads

Blog Post

Claude.ai vs Claude API

You have used Claude. But which Claude? The Claude app (claude.ai, the desktop and mobile apps) is the chat product you talk to. The Claude API is the developer...

2026-05-25 (first published: )

364 reads

Blog Post

Why Claude?

Every major model out there can summarise documents, write code and answer multi step questions – then if you decide to go with a specific vendor based on costs...

2026-05-18 (first published: )

921 reads

Blogs

Five Ways Redshift Serverless Quietly Eats Your Budget

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Annabel retired from Redgate Software this week. Across most of my career at Redgate,...

Rethinking Index Maintenance: Why avg_fragmentation_in_percent Is Outdated and What You Should Do Instead

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As a SQL Server DBA with years of experience tuning production environments, I’ve seen...

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Forums

What is the Cloud?

By Steve Jones - SSC Editor

Comments posted to this topic are about the item What is the Cloud?

Changing the Schema

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Changing the Schema

Index Fragmentation Explained: Page Splits, Logical Reads, and What to Do

By Sanket Parmar

Comments posted to this topic are about the item Index Fragmentation Explained: Page Splits,...

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Question of the Day

Changing the Schema

I set up a few users on my SQL Server 2022 instance.

CREATE LOGIN User1 WITH PASSWORD = 'Demo12#1'
CREATE USER User1 FOR LOGIN User1
GO
CREATE LOGIN User2 WITH PASSWORD = 'Demo12#2'
CREATE USER User2 FOR LOGIN User2
GO
CREATE LOGIN User3 WITH PASSWORD = 'Demo12#3'
CREATE USER User3 FOR LOGIN User3
GO
I then created a schema that one of them owned. Under this schema, I added a table with some data.
CREATE SCHEMA MySchema AUTHORIZATION User1
GO
CREATE TABLE Myschema.MyTable(myid INT)
GO
INSERT MySchema.MyTable
(
    myid
)
VALUES
(1), (2), (3)
GO
SELECT * FROM MySchema.MyTable
GO
I granted rights and verified that User2 could access this table.
GRANT SELECT ON Myschema.MyTable TO User2
GO
SETUSER 'USER2'
GO
SELECT * FROM MySchema.MyTable
GO
This worked. Now, I move this schema to a new user.
ALTER AUTHORIZATION ON SCHEMA::Myschema TO User3;
GO
What happens with this code?
SETUSER 'USER2'
GO
SELECT * FROM MySchema.MyTable
GO

See possible answers