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Snapshot Isolation Level in SQL Server - What, Why and How - Part 1

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Snapshot isolation levels improve performance but there are some things to take into consideration when using this feature. Arshad Ali discusses what snapshot isolation levels are, their variants, and why and when we should use them.

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2012-05-14

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Question of the Day

The ##MS_DatabaseConnector## User

On SQL Server 2025, I run this code as a sysadmin:

CREATE LOGIN Demo WITH PASSWORD = 'Demo1234567'
GO
ALTER SERVER ROLE ##MS_DatabaseConnector## ADD MEMBER Demo
GO
I then login as Demo and run this:
USE sandbox
go
SELECT CURRENT_USER
What is returned?

See possible answers