SQL Server 2008 (major build version 10.00.xxxx). Please also tag with sql-server.
SQL Server 2008 was introduced in August 2008. Current build versions include:
- 10.00.1600 - RTM
- 10.00.2531 Service Pack 1, released April 2009
- 10.00.4000 Service Pack 2, released September 2010
- 10.00.5500 Service Pack 3, released October 2011
- 10.00.6000 Service Pack 4, released September 30, 2014 (final)
SQL Server 2008 left mainstream support on 2014-07-08, and will leave extended support on 2019-07-09.