Query Stats
DBAs rarely use the full potential of sys.dm_exec_query_stats. It’s common to see the queries for looking at the most expensive...
2013-09-04 (first published: 2013-08-27)
3,744 reads
DBAs rarely use the full potential of sys.dm_exec_query_stats. It’s common to see the queries for looking at the most expensive...
2013-09-04 (first published: 2013-08-27)
3,744 reads
The main reason I started blogging was a community thing. I leeched from the community to get me to where...
2013-09-04
1,008 reads
What is Page Life Expectancy (PLE), what makes it drop, and how can I manage memory better? Abusing disks slows...
2013-08-20 (first published: 2013-08-19)
4,685 reads
I’ll be presenting at SQL Saturday 250 in Pittsburgh on Baselining and Monitoring. This is my first public presentation, and...
2013-08-20
767 reads
The dmv sys.dm_os_performance_counters is awesome, if you can understand it. This is how I make it easy to read and...
2013-08-13
2,564 reads
Deadlocks are rough to work with. Here are the scripts I use to capture deadlocks, find which ones are reoccurring,...
2013-08-06
2,078 reads
It’s not too uncommon for a query to get a new execution plan that performs a lot worse than it...
2013-06-24 (first published: 2013-06-19)
1,794 reads
A user calls to say the app or server is slow today. Here’s a quick summary of how I get...
2013-06-20
864 reads
Capturing information is useless unless you know how to use it. Here’s what I use to get the most out...
2013-06-18
1,389 reads
SQL Server tracing is essential for troubleshooting performance issues, yet it can put loads on your server that would cause...
2013-06-16
1,061 reads
By HeyMo0sh
Microsoft Fabric (not to be confused with the more general term “fabric” in DevOps)...
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,...
Hi Team, I am trying to refresh the Azure Synapse Dedicated pool from production...
Looking for a creative and experienced mobile game development company that brings your game...
hi everyone I am not sure how to write the query that will produce...
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