2022-10-24
600 reads
delete
Can you prevent deletes and inserts without a WHERE clause from running?
Erik writes a script to do what it says on the tin.
2018-01-01
4,692 reads
Differences between Delete and Truncate in SQL Server
Atul Gaikwad details the differences between DELETE and TRUNCATE, including how they vary in terms of being rolled back.
2016-05-18
4,518 reads
Hidden Tricks To SQL Server Table Cleanup
How to delete millions of rows with virtually no contention.
2015-09-04 (first published: 2013-03-06)
28,360 reads
Automated Trigger To Require a WHERE Clause
Learn how you can build triggers that prevent an update or delete statement from being run without a WHERE clause in this article.
2013-08-09 (first published: 2011-01-25)
16,915 reads
Delete records in all related tables
Used to generate Select/Delete scripts. It does NOT run them.
You need to copy the output of this script to a new window and run it manually.
2008-08-06
581 reads
The Difference between Truncate and Delete in SQL Server
This article explains the differences between the Truncate and Delete commands in SQL Server.
2019-09-18 (first published: 2007-11-22)
37,105 reads
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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