SQL Server, Azure SQL Database, Amazon RDS & AWS, Oracle and IBM Help
An online community of DBAs, developers and data intelligence builders, with videos, articles, resources and online events for members and non-members.
Find out more >>
(Glenn Berry) Between 1998 and early 2014, SQL Server used one cardinality estimator (CE), but would introduce a new database compatibility level with every new major version of SQL Server, (with the exception of SQL Server 2008 R2).