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Sample Chapter from Murach's SQL Server 2008 for Developers

Chapter 3 from Murach’s SQL Server 2008 for Developers shows you how to retrieve data from a database table. In the process, you’ll master the basic skills that you’ll use in coding almost any SELECT statement, no matter how complex. At that point, you’ll be ready to learn how to code joins, summary queries, subqueries, and action queries, and then move on to working with server-side features like cursors and stored procedures.

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Creating a JSON Document IV

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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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