Microsoft SQL Server 2012 service packs are cumulative updates and upgrade all editions and service levels of SQL Server 2012 to SP4. This service pack contains up to and including SQL Server 2012 Service Pack 3 Cumulative Update 9 (CU9).
This download site contains the following packages and service patches for the Microsoft SQL Server 2012 SP4 release:
Microsoft SQL Server 2012 SP4 Update – this package contains the Microsoft SQL Server 2012 Service Pack 4 update to be applied to existing SQL Server 2012 installations.
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