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SQL Server Index Primer

Indexes 101: What, Why, and When? “What Is an Index?” I get this question a lot, especially from developers and sysadmins who’ve been handed a SQL Server and told,...

2025-05-12 (first published: )

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SQL Server Wait Stats

Everything in SQL Server is waiting for something…this is by design. And most people never think about it… Until your application is waiting to complete its request, sell the...

2025-04-30 (first published: )

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The Cost of Not Having a DBA

Does skipping a DBA save money? Wait until your system grinds to a halt, your backups fail, or your cloud bill skyrockets. The “DBA? We Don’t Need No Stinkin’...

2025-04-14 (first published: )

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SQL Server Time Bombs

Common Reasons for Emergency SQL calls If you are a production DBA (or Accidental prod DBA) you’ve gotten that frantic call in the middle of the night. Or maybe...

2025-03-12 (first published: )

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Blogs

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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Creating a JSON Document IV

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Creating a JSON Document IV

Permissions Removal When Changing Object Schema

By Brandie Tarvin

When the schema of an object is changed, SQL Server wipes out the previous...

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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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