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Duplicate Indexing Woes

Why would you ever create duplicate indexes? Does that even make sense? Steve Jones isn't sure, and that's for another day, but it sure caused him some problems. Follow along and find a solution for tracking these down.

Technical Article

Superior SQL Builder v1.3 released

Red Earth Technologies announces the release of version 1.3 of Superior SQL Builder, its SQL tool that allows users to visually build complete SQL scripts without typing any code.

Superior SQL Builder introduces new SQL scripting technology, allowing users to quickly and easily transform their database data. In version 1.3 this scripting technology has been extended and enhanced so that complex SQL scripts can be built in less time and with greater ease.

SQLServerCentral Article

Codd's Rules

Frank gives us his take on Codd's Rules. If you're new to databases, this is the core theory that resulted in the development of RDBMS. If you're more experienced with databases, maybe now is a good time to return to the rules to see how you're doing!

SQLServerCentral Article

Sequential Numbering

Needing to number rows with a sequential id is a pretty common request. Sometimes it's because the user hasn't made the transition to 'set based' thinking, sometimes it really is a valid request (more or less!). Greg provides several different techniques to help you achieve sequential numbering.

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Question of the Day

Fun with JSON I

I have some data in a table:

CREATE TABLE #test_data
(
    id INT PRIMARY KEY,
    name VARCHAR(100),
    birth_date DATE
);

-- Step 2: Insert rows  
INSERT INTO #test_data
VALUES
(1, 'Olivia', '2025-01-05'),
(2, 'Emma', '2025-03-02'),
(3, 'Liam', '2025-11-15'),
(4, 'Noah', '2025-12-22');
If I run this query, how many rows are returned?
SELECT *
FROM OPENJSON(
     (
         SELECT t.* FROM #test_data AS t FOR JSON PATH
     )
             ) t;

See possible answers