Might be a silly question, so feel free to ignore this, but do you really need the DATE and TIME in 2 different columns?  I have seen systems do this...

As a guess - I would say that the report is rendering and/or calculating out the number of pages it needs which is why you need to wait.  When the...

From looking at what you have, I think I see what is wrong.  You are inserting into AllData the columns, but since you are not specifying a column to insert...

Another way to optimize the sort operation would be to remove it by removing your ORDER BY statement.  If you don't order the data, no sorting would be required.

That is a painful problem to solve.  The other problem that can arise is how many columns do you need to make to handle current state and future state?

My opinion...

To me that sounds like when the disk had bad sectors which resulted in data getting corrupted in the system databases and possibly user databases.

First, I would put it into...

I would start by reaching out to Microsoft for support.

They may suggest that you rebuild master, but you will lose all of your logins and roles and other objects stored...

I am thinking you mean DLL not DDL.  Wireshark would probably help determine if it is network related, and I am still leaning towards something on the network stack between...

With the view, if the indexes on the table are "good enough" for it, then you could still use the view without the index on it.  This would allow you...

Pretty sure in SQL Server, that would be a view or a table.

You cannot name a query.  So whatever the contents of the query "QRY_DATES" are, you would need to...

If I am understanding your post correctly, switching to Windows Server 2019 is causing the slowness getting data from the SQL instance, correct?

If so, I would guess the problem is...

My first thought would be firewall or permissions.

Permissions could be a problem if the SQL Server Service account (or Agent service account or the Polybase service account... not 100% certain...

type = 'U' means you are grabbing all "user" type of login.  To SQL, a "human" and a "non-human" are identical.  It is just a login.

How would SQL know the...

I would go with that approach UNLESS the full CHECKDB fails on the restored DB.  If it fails, I would then run a full on prod as well to ensure...

Pretty sure that my advice above would apply to views as well.  Profiler or plan cache will capture the TSQL being run and then you can review and audit it.

The...