Klaus Aschenbrenner

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T-SQL Tuesday #198–Change Detection

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This month we have a new host, Meagan Longoria, who graciously agreed to help...

Redgate and Rome

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I’m at the UK Redgate office today, meeting with senior leaders in all areas...

Quick Tip: Check Most DTU Expensive Queries in Azure SQL Database

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Optimizing Azure SQL Database performance often begins with identifying the most resource-intensive queries. Understanding...

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Which Wireless Credit Card Terminal Works Best for Small Businesses?

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I’m currently researching the best wireless credit card terminal for a growing business and...

Creating a JSON Document IV

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Restoring Azure Key Vault Keys and Validating SQL Server TDE Recovery: Level 7 of the Stairway to TDE

By VishnuGupthanSQLPowershellDBA

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Question of the Day

Creating a JSON Document IV

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 
  YearEstablished,
  json_objectagg(city : TeamName)
FROM dbo.NFLTeams
GROUP BY  YearEstablished;

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