In a world dominated by data, organizations heavily rely on business intelligence tools like Power BI for deriving insights and informed decision-making. Yet, as data volumes grow and user demands increase, achieving optimal performance becomes challenging.
2026-03-04 (first published: 2025-03-26)
1,811 reads
Business Intelligence (BI) tools like Power BI are used by a wide range of professionals, creating diverse and complex scenarios, and finding the right solution can be daunting, especially when multiple approaches exist for a single use case. The author distills his 17 years of experience on various data platform technologies in this book to walk you through various Power BI usage scenarios.
2026-01-16 (first published: 2025-05-27)
4,404 reads
You may know SQL basics, but are you taking advantage of its expressive power? This second edition applies a highly practical approach to Structured Query Language (SQL) so you can create and manipulate large stores of data. Based on real-world examples, this updated cookbook provides a framework to help you construct solutions and executable examples in several flavors of SQL, including Oracle, DB2, SQL Server, MySQL, and PostgreSQL.
2025-12-03 (first published: 2025-05-27)
1,867 reads
Best of SQLServerCentral vol 5 pulls together some of the best contributions to SQLServerCentral.com in 2007.
2022-04-27 (first published: 2009-02-10)
5,261 reads
"Best of SQLServerCentral v6" pulls together some of the best, most popular, and the most read articles of 2008, in dead tree format, covering database administration, BI, design, security, T-SQL, and most things in between.
2022-04-27 (first published: 2009-02-10)
7,565 reads
Best of SQLServerCentral vols 1-4 pulls together some of the best contributions to SQLServerCentral.com between 2002 & 2006.
2022-04-26 (first published: 2009-04-16)
5,944 reads
The seventh volume in this collection brings you a compilation of the best articles we've seen over the past year, from over 50 authors.
2009-11-12
6,468 reads
Whether practicing for an exam or interview, or just wanting to see who's got the biggest SQL Server brain in your office, this book is perfect. Containing 100 SQL Server Central Questions of the Day, this book is a great way to test yourself and increase your knowledge.
2009-06-03
3,398 reads
By Brian Kelley
I will be leading an in-person Certified Information Systems Auditor (CISA) exam prep class...
EightKB is back again for 2026! The biggest online SQL Server internals conference is...
By HeyMo0sh
Working in DevOps long enough teaches you two universal truths: That’s exactly why I...
Hi all, I just started using VS Code to work with DB projects. I...
Comments posted to this topic are about the item Fun with JSON II
Comments posted to this topic are about the item Changing Data Types
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