The SQL @@VERSION global variable returns the version of the currently installed SQL server. It includes the SQL server’s system and the build information.
All the details required for upgrade and installations of new features in SQL Server are provided by the @@VERSION function. The information includes SQL Server version, processor architecture, SQL Server build date, SQL Server edition, Operating System version, and a copyright statement.
@@VERSION Usage Notes
Note that @@VERSION is a global variable. The @@ precede global variables.
SQL @@VERSION Examples
The following query returns the information about the installed SQL Server.
/* Answer */ SELECT @@VERSION AS 'SQL Server Version Details'
The output contains all the information discussed above like SQL Server version, processor architecture (like X64), SQL Server build date, etc.