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Advanced Performance Tuning for Microsoft SQL Server

No matter where you run your SQL Server® instances—on-premises, in a virtual machine, or in an Azure SQL Database Managed instance—the challenge is the same. How do you ensure you get optimum performance? Is the virtual machine impacting your database instance performance? Which queries cause the most blocking or deadlocking? Are you consuming more DTUs in your Azure SQL Database than you budgeted for?

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Question of the Day

Creating a JSON Document III

I have this data in a table called dbo.NFLTeams

TeamID  TeamName       City             YearEstablished
------  --------       ----             ---------------
1       Cowboys        Dallas           1960
2       Eagles         Philadelphia     1933
3       Packers        Green Bay        1919
4       Chiefs         Kansas City      1960
5       49ers          San Francisco    1946
6       Broncos        Denver           1960
7       Seahawks       Seattle          1976
8       Patriots       New England      1960
If I run this code, how many rows are returned?
SELECT TOP 2 
  json_objectagg('Team' : TeamName)
FROM dbo.NFLTeams;

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