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Another look at table variables

Becoming overly enthusiastic about a new SQL Server feature can backfire if you don’t do some testing. One example is the table variable introduced with SQL Server 2000. At the time, there was a myth that table variables would always perform better than temp tables with the reasoning that, by definition, variables are stored in […]

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Question of the Day

Creating a JSON Document II

I want to create a JSON document that contains data from this table:

TeamID TeamNameCity         YearEstablished
1      Cowboys  Dallas       1960
2      Eagles   Philadelphia 1933
3      Packers  Green Bay    1919
4      Chiefs   Kansas City  1960
If I run this code, what document(s) is/are returned?
SELECT json_objectagg( n.city : n.TeamName)
FROM dbo.NFLTeams;

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