SQL Server Version and code name
| Version | Year | Release name | Code name | Internal database version |
| 1.0 (OS/2) | 1989 | SQL Server 1.0 (16-bit) | Filipi | - |
| 1.1 (OS/2) | 1990 | SQL Server 1.1 (16-bit) | Pietro | - |
| 4.2A (OS/2) | 1992 | SQL Server 4.2A (16-bit) | - | - |
| 4.2B (OS/2) | 1993 | SQL Server 4.2B (16-bit) | - | - |
| 4.21a (WinNT) | 1993 | SQL Server 4.21a | SQLNT | - |
| 6 | 1995 | SQL Server 6.0 | SQL95 | 406 |
| 6.5 | 1996 | SQL Server 6.5 | Hydra | 408 |
| 7 | 1998 | SQL Server 7.0 | Sphinx | 515 |
| - | 1999 | SQL Server 7.0 OLAP Tools | Plato | - |
| 8 | 2000 | SQL Server 2000 | Shiloh | 539 |
| 8 | 2003 | SQL Server 2000 64-bit Edition | Liberty | 539 |
| 9 | 2005 | SQL Server 2005 | Yukon | 611/612 |
| 10 | 2008 | SQL Server 2008 | Katmai | 655 |
| 10.25 | 2010 | Azure SQL database (initial release) | Cloud database or CloudDB | |
| 10.5 | 2010 | SQL Server 2008 R2 | Kilimanjaro (aka KJ) | 661 |
| 11 | 2012 | SQL Server 2012 | Denali | 706 |
| 12 | 2014 | SQL Server 2014 | SQL14 | 782 |
| 13 | 2016 | SQL Server 2016 | SQL16 | 852 |
| 14 | 2017 | SQL Server 2017 | Helsinki | 869 |
| Not yet released | 2019 | SQL Server 2019 CTP | Seattle | 895 |
Link: https://sqlserverbuilds.blogspot.com/
For more details on determining SQL Server version and edition, visit: How to determine the version, edition, and update level of SQL Server
