How to determine total number of open/active connections in Microsoft sql server

This shows the number of connections per each DB:

SELECT DB_NAME(dbid) as DBName, COUNT(dbid) as NumberOfConnections, loginame as LoginName FROM sys.sysprocesses WHERE dbid > 0 GROUP BY dbid, loginame

And this gives the total:

SELECT COUNT(dbid) as TotalConnections FROM sys.sysprocesses WHERE dbid > 0

If you need more detail, run:

sp_who2 'Active'

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