Identity columns are all over the place. Probably 80-90% of the tables I see have them and they are almost ... Continue reading
2019-11-29 (first published: 2019-11-20)
1,092 reads
Over the years I’ve seen quite a few strange things with SQL Server. This one may not have been the ... Continue reading
2019-11-25 (first published: 2019-11-14)
1,138 reads
Hey, it’s T-SQL Tuesday again! I almost forgot about it what with Summit and all. Wayne Sheffield (blog|twitter) is our ... Continue reading
2019-11-21 (first published: 2019-11-12)
452 reads
Anecdotally any session_id that’s 50 or less is going to be a system session and anything over 50 will be ... Continue reading
2019-11-18
38 reads
I’m blogging they Keynote! One of my bucket list things has always to live blog a keynote at Pass Summit ... Continue reading
2019-11-07
103 reads
We need to have processes and rules. They are important to any business. That said, exceptions are also going to ... Continue reading
2019-11-07 (first published: 2019-10-30)
408 reads
This week is the PASS Summit and it has me thinking about all of the amazing work done in our ... Continue reading
2019-11-06
9 reads
Time for some homework again. I know Pass Summit is this week so you may be a bit busy but ... Continue reading
2019-11-04
33 reads
One of the other things I learned from the Powershell class I’m taking this week is that there is an ... Continue reading
2019-11-01 (first published: 2019-10-21)
469 reads
I’m a DBA. Data types are kind of important to me. I mean I know they are important to developers ... Continue reading
2019-10-28
125 reads
By James Serra
I’m honored to be hosting T-SQL Tuesday — edition #192. For those who may...
By Vinay Thakur
Continuing from Day 2 , we learned introduction on Generative AI and Agentic AI,...
Quite the title, so let me set the stage first. You have an Azure...
hi everyone I am not sure how to write the query that will produce...
Comments posted to this topic are about the item Rollback vs. Roll Forward
Comments posted to this topic are about the item Foreign Keys - Foes or...
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