2025-11-10
1,046 reads
DBCC CHECKDB
2025-11-03
1,289 reads
3 Ways to Run DBCC CHECKDB Faster
In my last post, I talked about how you can get 43%-67% faster backups. This time, I’m using that same SQL Server setup to discuss how throwing more CPU cores might help you check for corruption faster if you’ve already got modern fast storage.
2020-09-28
Verify your SQL Server database backups
Introduction A popular joke about DBAs and database backups goes like this. There are two types of DBAs: DBAs that do backups DBAs that will do backups The joke is only stating the obvious – lack of database backups might be the end of a DBA career and/or the supported business. Unfortunately, that joke fails […]
2020-01-07
10,236 reads
Generate HTML Formatted Email of SQL Server Database Consistency Check Errors
In this tip we look at to create a SQL Server DBCC CHECKDB errors email formatted in an HTML table. This will report any errors for all of your databases on the server.
2018-10-24
2,764 reads
Importance of Performing DBCC CHECKDB on all SQL Server Databases
The SQL Server model database is one of the core system databases, but it seem to get less attention in terms of importance. This post from Simon Liew will demonstrate the havoc the model database can cause when database integrity checks exclude the model database and corruption goes undetected.
2017-01-26
4,940 reads
Faster DBCC CHECKDB with SQL Server 2016
DBCC CHECKDB is a built-in SQL Server command that allows you to check database integrity and consistency in one simple command, but running it on large databases can be a nightmare. In this article, Ahmad Yaseen explains how you can enhance the command to run faster in SQL Server 2016.
2016-09-28
3,423 reads
DBCC CHECKDB to a table
An enhanced version of a script originally posted by Robert Pearl some time ago. It now takes into account changes in the tabelresults for CHECKDB in latter versions of SQL Server.
2016-05-04 (first published: 2016-04-20)
1,271 reads
Automate Data Purity Investigation
Sometimes running DBCC CHECKDB WITH DATA_PURITY returns thousands of affected columns. This script automates the identification of those columns.
2015-04-13 (first published: 2013-07-04)
2,420 reads
A faster DBCC CHECKDB?
This article describes a utility that is able to report the most common DBCC CHECKDB errors significantly faster than DBCC CHECKDB does itself.
2011-08-23
15,353 reads
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Fun with JSON II
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Question of the Day
Fun with JSON II
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 t1.[key] AS row,
t2.*
FROM OPENJSON(
(
SELECT t.* FROM #test_data AS t FOR JSON PATH
)
) t1
CROSS APPLY OPENJSON(t1.value) t2; See possible answers