Autogrow bug – fixed with Denali
Recently I ran into a bug related to autogrow of the log file. Because this was the second time I...
2011-08-23
1,864 reads
T-SQL Enhancements: OVER clause
With SQL Server Denali there has been made some improvements to the OVER clause, which I wasn’t even aware of...
2011-08-16
1,449 reads
Server Side Paging with new OFFSET feature in SQL Server Denali
Ever since I was a web developer back in the days, server side paging has been an issues. Back then...
2011-08-09
1,726 reads
LAG’n’LEAD – New T-SQL Features in SQL Server Denali CTP3
Are you tired of doing self joins, just to get the value of a column in the previus/subsequent row, or...
2011-08-02
1,710 reads
Optimize a query by thinking out of the box
Recently I had to create a simple query to lookup a single row in a table containing ranges that do...
2011-07-26
621 reads
SQL Server – SET STATISTICS [IO|TIME] ON
My colleagues and I often joke around with “If it takes less than a second, then it’s okay!”. The reason...
2011-07-19
1,459 reads
Which database is using all my CPU #2
A few weeks back we wrote about a query to tell you which database is using up most CPU time....
2011-07-12
1,483 reads
T-SQL Enhancement: EXECUTE WITH RESULT SETS
All developers know, that it is very important to encapsulate code in classes and methods to be able to reuse...
2011-07-05
798 reads
Which database is using all my CPU
We all know how easy it is to see how much CPU power is consumed by the SQL Server process,...
2011-06-28
1,656 reads
Index Rebuild progress v2
I have actually written about this subject earlier on my Danish blog (http://www.performanceduo.com/post/Index-Rebuild-progress.aspx), but last week when working on a...
2011-06-21
18,075 reads
Blogs
AI: Blog a Day – Day 5: Notebooks, Hugging face models and Fine Tuning
By Vinay Thakur
Continuing from Day 4 where we learned Encoder, Decoder, and Attention Mechanism, today we...
AI: Blog a Day – Day 4: Transformers – Encoder, Decoder, and Attention
By Vinay Thakur
Continuing from Day 3 where we covered LLM models open/closed and their parameters, Today...
Flyway Tips: Multiple Projects
By Steve Jones
One of the nice things about Flyway Desktop is that it helps you manage...
Forums
Can an Azure App Service Managed Identity be used for SQL Login?
I'm fairly certain I know the answer to this from digging into it yesterday,...
Azure Synapse database refresh
Hi Team, I am trying to refresh the Azure Synapse Dedicated pool from production...
how to write this query?
hi everyone I am not sure how to write the query that will produce...
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