My name is Andrew Fenna, and I am a database developer at The Laterooms Group. I have written this blog to educate my fellow database developers in subjects that I think are necessary to keep at the top of our game. I have been working with RDBMS’s since 2002 and I have worked within financial, gaming, public, and travel sectors within the Northwest of England. I have gained quite a lot of experience throughout my journey and have tackled some very difficult challenges along the way. Therefore, I am blogging my experiences, which I hope will give you the inspiration to try and tackle problems that are deemed impossible to start, but with some encouragement and guidance become much more simpler and structured, thank you for your time. Andrew J Fenna.

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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

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