SQLServerCentral Editorial

Where the World Takes You

We're launching into a new year and there are lots of "looking into the future" articles out there. Personally, I'm pretty jazzed for the coming year for any number of reasons (can you say "SQL Server 2022"?). However, I also get a little retrospective at times like this. Now, I'm not going to talk about […]

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Analyze Live Salesforce Data in Infragistics Reveal 

Infragistics Reveal is a data visualization solution that simplifies the way you add embedded analytics and visualizations to your apps. Reveal supports connecting to OData APIs, but many enterprise APIs are not built using the OData standard. By combining Reveal with CData solutions, you can instantly build dynamic dashboards from live enterprise data sources like Salesforce. […]

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Query control made easy

Overview As we all know, data security is a never-ending battle. Every day, we hear of new data breaches. It's a hard problem, and there is no single solution, other than a defense in depth. Let's look at one of those defenses for databases: query control. Query control is a simple idea: most applications access […]

Stairway to Advanced T-SQL

Stairway to Advanced T-SQL Level 6: Creating Rows Of Data Using The UNPIVOT Operator

The UNPIVOT operator does just the opposite of the PIVOT operator, which we looked at in the previous level. By using the PIVOT operator we can take multiple rows of data and create as single row as output. The UNPIVOT operator will take values from a single row and will create multiple rows. Microsoft introduced the UNPIVOT operator when they rolled out SQL Server 2005. In this level I will be showing you different examples of how to use the UNPIVOT operator.

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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;

See possible answers