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Who is the Best Batman in Power BI

Who is the best Batman? – A Power BI Analysis of data Introduction Who is the best Batman? We were drinking some cold beers with some friends when someone said that Pattinson was the best Batman. People started to discuss and after 2 hours, the police had to stop the fight. The discussion inspires me […]

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2022-05-09

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External Article

Flyway How-tos: a User’s Perspective

Flyway provides a database-independent way for a team to track, manage and apply database changes, while maintaining strict control of database versions. It updates a database by running a series of versioned migration scripts, in order, and keeps track of all the changes in a special "schema history" table. It sounds simple, but it is easy to derail this team discipline if you don't find the right answers to the following questions…

2022-05-09

External Article

What is the Flyway Teamwork Framework?

My FlywayTeamwork PowerShell framework is designed to help get you started quickly with developing databases, using Flyway versioned migrations. It introduces a PowerShell task library, and automation, to take care of repetitive chores. It will also help you get to grips with the practicalities of using Flyway in team-based development. This article explains the basics of its design and provides a demo how to use Flyway to migrate a PostgreSQL database, while generating a high-level narrative of the changes made between versions.

2022-05-04

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Fun with JSON II

By Steve Jones - SSC Editor

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Changing Data Types

By Steve Jones - SSC Editor

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Answering Questions On Dropped Columns

By Cláudio Silva

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Question of the Day

Fun with JSON II

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 t1.[key] AS row,
       t2.*
FROM OPENJSON(
     (
         SELECT t.* FROM #test_data AS t FOR JSON PATH
     )
             ) t1
    CROSS APPLY OPENJSON(t1.value) t2;

See possible answers