SQL Server version

All SQLServer service packs are cumulative, meaning that each new service pack contains all the fixes that are included with previous service packs and any new fixes.

Quick summary:

RTM (no SP) SP1 SP2 SP3 SP4
 SQL Server 2016 CTP2.4
 SQL Server 2014 12.0.2000.8 12.0.4100.1
 SQL Server 2012 11.0.2100.60 11.0.3000.0 11.0.5058.0
 SQL Server 2008 R2 10.50.1600.1 10.50.2500.0 10.50.4000.0 10.50.6000.34
 SQL Server 2008 10.0.1600.22 10.0.2531.0 10.0.4000.0 10.0.5500.0 10.0.6000.29
 SQL Server 2005 9.0.1399.06 9.0.2047 9.0.3042 9.0.4035 9.0.5000
 SQL Server 2000 8.0.194 8.0.384 8.0.532 8.0.760 8.0.2039
 SQL Server 7.0 7.0.623 7.0.699 7.0.842 7.0.961 7.0.1063