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In SQL Server, there are some DMVs that appear in all databases and have the same content in it. What’s the purpose of this approach? For example, the following 2 query will give the same result.
select *
from master.sys.databases
select *
from tempdb.sys.databases
Thanks.
sys.databases only exists once (actually in the hidden resource database)
All you are doing above is switching db context temporarily by using a 3 part object name