Patrick

Patrick Keisler is a Senior CSA - Engineering for Microsoft with over 20 years of SQL Server experience working in various fields such as financial, healthcare, and government. You can follow him on Twitter or listen to him speak at various SQL Saturdays and user group meetings.

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Blog Post

One Year Later

Wow!  It’s been one year since I launched my blog, and my how things have changed.

Accomplishments Over the Past...

2013-09-24

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Blogs

Finding and Updating Duplicate IDs: #SQLNewBlogger

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Finding duplicates was an interview question for me years ago, and I’ve never forgotten...

Optimising Costs: Strategies for Efficient Cloud Resource Management

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Over time, I’ve realised that one of the hardest parts of cloud management isn’t...

Cost Visibility: Tracking and Analysing Your Cloud Spend

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One of the biggest challenges I’ve faced in cloud operations is maintaining clear visibility...

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Forums

Fun with JSON II

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Fun with JSON II

Changing Data Types

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Changing Data Types

Answering Questions On Dropped Columns

By Cláudio Silva

Comments posted to this topic are about the item Answering Questions On Dropped Columns

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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;

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