Disk Performance Metrics in AWS and Azure
In the last two posts, we have discussed the different types of storage disks available in the AWS and Azure cloud platforms. We also discussed the characteristics that affect...
2020-04-19
13 reads
Disks performance in Azure
In our earliest post, we have discussed in detail about the factors that affect the disk performance and different types of disk offerings in the AWS platform. In this...
2020-04-14 (first published: 2020-04-05)
1,955 reads
Understanding Disk Performance and IOPS in cloud platform
In the past many years, apart from working as DBA, I was working with multiple cloud technologies and actively involved in the migration process to cloud infrastructure. In between,...
2020-04-06 (first published: 2020-03-29)
2,890 reads
Disks performance in Azure
In our earliest post, we have discussed in detail about the factors that affect the disk performance and different types of disk offerings in the AWS platform. In this...
2020-04-05
12 reads
Understanding Disk Performance and IOPS in cloud platform
In the past many years, apart from working as DBA, I was working with multiple cloud technologies and actively involved in the migration process to cloud infrastructure. In between,...
2020-03-29
11 reads
SQL Server Backup and Restore Strategy Step by Step
Introduction:
Who is not aware of a SQL Database? It was the first business language introduced for E.F Codd’s Relational Database management system. In addition, MySQL, Oracle, Informix, Sybase, MS...
2020-02-20 (first published: 2020-02-12)
1,454 reads
How to Fix SQL Database Logical Consistency Based I/O Error
There can be several reasons that cause Database Logical Consistency based I/O error:
Unexpected system shutdown/crash or forced shutdown
SQL administrator tries to query or modify SQL data
In both the circumstances,...
2019-11-26
33,935 reads
How to Reduce the Risk of SQL Database Corruption
Introduction:
Today we are going to learn how to prevent SQL database corruption. Let’s start with some facts about how database corruption can occur actually. The SQL database corruption could...
2019-10-09
364 reads
An Effective Solution to Resolve SQL Database Corruption
I am a SQL Administrator and today I will share my experience about an issue on SQL server, which corrupted the transaction logs and left the database in a...
2019-09-25 (first published: 2019-09-17)
2,692 reads
SQL Server :Part 1 : Architecture of Transaction Log
In our earlier post, we have discussed in detail about the architecture of the data file and different types of pages. In this post, we will be discussing about...
2013-10-01
173 reads
Blogs
In-Person CISA Training – April 13-16, 2026
By Brian Kelley
I will be leading an in-person Certified Information Systems Auditor (CISA) exam prep class...
EightKB 2026
EightKB is back again for 2026! The biggest online SQL Server internals conference is...
The FinOps Lifecycle: From Budgeting to Reporting
By HeyMo0sh
Working in DevOps long enough teaches you two universal truths: That’s exactly why I...
Forums
VS Code, Unresolved References.
Hi all, I just started using VS Code to work with DB projects. I...
Fun with JSON II
Comments posted to this topic are about the item Fun with JSON II
Changing Data Types
Comments posted to this topic are about the item Changing Data Types
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