SQL Server 2014

Technical Article

Optimizing Your Query Plans with the SQL Server 2014 Cardinality Estimator

  • Article

This paper provides an overview of the primary changes made to the cardinality estimator functionality by the Microsoft query processor team, covering how to enable and disable the new cardinality estimator behavior, and showing how to troubleshoot plan-quality regressions if and when they occur.

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2015-10-19

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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