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T-SQL Challenge #1

Do you want to improve your T-SQL skills? MVP Jacob Sebastian runs regular challenges to get you to think about how to solve a problem in T-SQL. These run monthly and we have a summary and explanation from challenge #1 to help you learn more about moving data from 3 tables into a specific format.

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2009-09-14

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External Article

Disaster Recovery for SQL Server Databases

High-Availability depends on how quickly you can recover a production system after an incident that has caused a failure. This requires planning, and documentation. If you get a Disaster Recovery Plan wrong, it can make an incident into a catastrophe for the business. Hugo Shebbeare discusses some essentials, describes a typical system, and provides sample documentation.

2009-09-14

4,158 reads

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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