2016-01-21
1,441 reads
T-SQL
2016-01-20
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2016-01-18
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2016-01-12
1,784 reads
2016-01-11
1,740 reads
Why Scalar Functions Can Be Costly
Scalar user defined functions can be costly in more ways than you know. Watch Mickey Stuewe show the hidden costs of using them incorrectly.
2017-06-02 (first published: 2016-01-04)
14,746 reads
Get Set For Speed
Loops are common in application code, but set-based solutions are the way to go with SQL.
2018-02-23 (first published: 2015-12-29)
6,372 reads
2015-12-25
1,710 reads
2015-12-23
1,528 reads
2015-12-22
1,525 reads
Blogs
T-SQL Tuesday #192: What career risks have you taken?
By James Serra
I’m honored to be hosting T-SQL Tuesday — edition #192. For those who may...
AI: Blog a Day – Day 3: LLM Models – Open Source vs Closed Source
By Vinay Thakur
Continuing from Day 2 , we learned introduction on Generative AI and Agentic AI,...
How to Parameterize Fabric Linked Services in Azure Data Factory for Azure Devops Deployment
Quite the title, so let me set the stage first. You have an Azure...
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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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