Viewing versions of multiple instances of SQL Server

View the current version of SQL Server installation through the select @ @version :

The result is SQL Server R2 (SP1), which can be installed obviously SQL Server (SP1).

Then through the menu-help-about the display of SQL Server Management Studio version is SQL Server 2012.

I was wondering at this moment.

Open SQL Server Configuration Manager only to notice that there are two instances.

And then look back at the first picture to know that the original login is using the SharePoint instance.

When you log on to the database engine, select the appropriate server ...

The database engine chooses the SRV-G2 effect:

Know the reason, and then a comparative result:

Additionally, this SharePoint instance is installed by default when SharePoint 2013 is being maintained.

There are two versions of MSSQL installed through programs and functions:

This article refers to:

1. Using multiple versions and instances of SQL Server

2. View the version of SQL Server 2005 through the SELECT @ @version, why SQL Server 2000 is displayed