Ed

Ed Leighton-Dick is a SQL Server performance and architecture expert and Founder/Principal Consultant of Kingfisher Technologies, a consultancy focused on SQL Server performance, architecture, and security. He is a frequent volunteer with PASS, including roles as regional mentor, chapter leader of I-380 PASS SQL Server User Group, and organizer of SQL Saturday Iowa City. He can often be found teaching sessions at local, regional, and national events, including user groups, SQL Saturday events, and Iowa Code Camp. Ed can be reached through his blog, edleightondick.com, and on Twitter at @eleightondick.

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Blog Post

Giving back [T-SQL Tuesday #102]

This post is part of the May 2018 T-SQL Tuesday blog challenge, “Giving Back“, from Riley Major. It’s been quite a while since I’ve participated in a T-SQL Tuesday....

2018-05-08

9 reads

Blog Post

Giving back [T-SQL Tuesday #102]

This post is part of the May 2018 T-SQL Tuesday blog challenge, “Giving Back“, from Riley Major. It’s been quite a while since I’ve participated in a T-SQL Tuesday....

2018-05-08

5 reads

Blog Post

Giving back [T-SQL Tuesday #102]

This post is part of the May 2018 T-SQL Tuesday blog challenge, “Giving Back“, from Riley Major. It’s been quite a while since I’ve participated in a T-SQL Tuesday....

2018-05-08

5 reads

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Blogs

In-Person CISA Training – April 13-16, 2026

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I will be leading an in-person Certified Information Systems Auditor (CISA) exam prep class...

EightKB 2026

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EightKB is back again for 2026! The biggest online SQL Server internals conference is...

The FinOps Lifecycle: From Budgeting to Reporting

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Working in DevOps long enough teaches you two universal truths: That’s exactly why I...

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Forums

VS Code, Unresolved References.

By mjdemaris

Hi all, I just started using VS Code to work with DB projects.  I...

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

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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