SQL Server Management Data Warehouse (MDW) – Why it Rocks
Ensuring excellent performance for users and customers is a high priority for Database Administrators.
Today I want to share a free and easy...
2013-04-16
2,488 reads
John Sansom
SQL Server Management Data Warehouse (MDW) – Why it Rocks
Ensuring excellent performance for users and customers is a high priority for Database Administrators.
Here I share a free and easy way for you to get valuable insight into the...
2013-04-16
142 reads
Implicit Conversions and Avoiding Them With Computed Columns
I recently encountered an interesting performance issue (due to implicit conversions) that I was able to solve using a lesser known...
2013-04-02 (first published: 2013-03-25)
3,966 reads
Implicit Conversions and Avoiding Them With Computed Columns
I recently encountered an interesting performance issue (due to implicit conversions) that I was able to solve using a lesser known technique and I wanted to share it with...
2013-03-25
28 reads
How To Be An Expert At What You Do
Every successful company has them. They’re the lifeblood of their organisations. Linchpins essential to getting things done and doing them...
2013-03-20
1,041 reads
Career Growth and How You Can Achieve Explosive Results
Continued investment in your professional development for career growth is hard. It’s also essential to being a successful Data Professional.
You’ve...
2013-03-05
1,511 reads
Something for the Weekend – SQL Server Links 01/03/13
It’s SFTW Time, I hope you’ve had a great week!
Make sure you don’t miss this weekly round-up of SQL Server...
2013-03-01
1,069 reads
Restart the SQL Server Agent Service using PowerShell
Just a quick one today chaps, to show how you can restart the SQL Server Agent Service using PowerShell.
Whilst covering...
2013-02-26
4,869 reads
Multitasking A Ridiculous Workload – How I Do It
I don’t! There’s no such thing as multitasking. At least, not how most of us think about it……
Being successful as...
2013-02-19
960 reads
Overconfidence – How it Almost Cost Me and What You Can Do to Avoid It
It was early one morning and I was working on a production deployment to add a new Subscriber to an...
2013-02-15 (first published: 2013-02-05)
3,767 reads
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Forums
how to write this query?
hi everyone I am not sure how to write the query that will produce...
Rollback vs. Roll Forward
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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