Fix Slow, Bloated MSDB: Purge Old History And Add Missing Indexes
After tempdb, msdb is often the most abused system database, growing unchecked until it tanks...
2026-02-11 (first published: 2026-01-30)
441 reads
Reality (And Limits) of Instant File Initialization for Transaction Logs in SQL Server 2022
If you’ve spent any time tuning SQL Server, you’ve probably heard “Turn...
2026-02-09 (first published: 2026-01-27)
298 reads
Dry-run xp_delete_file Before Actually Deleting Files?
xp_delete_file doesn’t really have a built-in dry-run option to preview which files it would remove. But there’s a simple workaround,...
2025-12-10 (first published: 2025-11-27)
467 reads
Writing Better Dynamic SQL
This updated and "sort" of a style guide is for SQL developers and, to some extent, DBAs, essentially anyone daring (and sometimes...
2025-11-18
289 reads
Set Theory vs. Batch Mode in SQL Server
Not long ago, a colleague of mine was completely shocked when he first heard about SQL Server’s Batch Mode feature. His immediate...
2025-10-15 (first published: 2025-09-23)
580 reads
Measuring and Improving SQL Server Query Plan Cache Efficiency
The query plan cache hit ratio in SQL Server indicates the percentage of queries that are executed...
2025-07-11 (first published: 2025-06-24)
628 reads
15 Characters or Less: The Challenge of SQL Server Listeners Name
There is a hard limit on how long your AlwaysOn listener name can be. That...
2025-01-27 (first published: 2025-01-14)
369 reads
How to clear the SSMS cache?
If you are reading this, it's probably because you too have this rare need to clear the SSMS cache for...
2025-01-13 (first published: 2025-01-10)
2,478 reads
How to Find Where Your Databases Reside In The File System
SQL Script:
Copy
/*
RETURNS LIST OF FOLDER NAMES WHERE SQL SERVER DATABASE
FILES ARE STORED.
It is dynamic...
2024-12-27 (first published: 2024-01-31)
790 reads
Database Property LastGoodCheckDbTime to Get the Last Successful DBCC CHECKDB on a Database
As one of the preventive database maintenance tasks, performing database integrity checks on almost every database you...
2024-07-01 (first published: 2024-06-13)
552 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,...
I'm fairly certain I know the answer to this from digging into it yesterday,...
Hi Team, I am trying to refresh the Azure Synapse Dedicated pool from production...
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