I have a query that finds all SPID's connected to a particular database:
select d.name, p.*
from sys.databases d join sys.sysprocesses p
on d.database_id = p.dbid
where d.name = 'my_db'
But now we have a new rule that we should not use outdated compatibility views, and one of them is sys.sysprocesses. I checked sys.dm_exec_connections/session/requests but failed to replace my existing code. The first two don't have dbid, the last one, requests, has it, but it selects only currently executing statements.