SQL RNNR

Blog Post

Interview Trick Questions

Anybody that has interviewed for a job has most likely run into the trick question. Some interviewers like to throw out multiple trick questions all in an effort to...

2019-02-04

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Blog Post

Defaults In msdb Database

The defaults in the msdb database are about what is missing. It's missing quite a few things that could be critical to your environment.
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2019-01-28

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Blog Post

Easy Permissions Audit

This is an introductory level method demonstrating how to quickly audit database objects and principals for granted permissions.
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2019-01-21

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Blog Post

Audit SQL Agent Jobs

One probably seldom thinks of the SQL Agent jobs scheduled on the SQL Server instance - unless they fail. What if the job failed because something was changed in...

2019-01-17

212 reads

Blog Post

Quick Permissions Audit

DBAs often need to figure out who has access to what. When that need arises, it is frequently adequate to just perform a quick permissions audit.
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2019-01-14

12 reads

Blogs

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how to write this query?

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hi everyone I am not sure how to write the query that will produce...

Rollback vs. Roll Forward

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Foreign Keys - Foes or Friend?

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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