Chris Yates

Chris Yates is a Database Administration Manager with over thirteen years of experience in the SQL industry. His experience includes design and implementation of both OLTP and OLAP solutions as well as assessment and implementation of SQL Server environments for best practices, performance, and high availability solutions accompanied by a strong development background. He enjoys helping others in the SQL Server community and does this by contributing on several SQL forums, creating “The SQL Professor”, and speaking at several SQL functions. His passion and focus is not only with technology but also helping others along their way and career path.

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Blog Post

How Can Data Empower Leaders

Using data effectively, leaders can make better decisions, drive innovation, and inspire trust. What is leadership through data? Leadership that utilizes data is the ability to use data as...

2024-03-13 (first published: )

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Blogs

T-SQL Tuesday #202 SQL Server Outage You’ll Never Forget: A Roundup

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When I put together the invitation for T-SQL Tuesday #202, I wasn't sure what...

A Last Minute Trip to the EU

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My life has some crazy travel stretches for sure. Between speaking, office visits, customer...

Part 3 of 3: Tuning DiskANN — R, Alpha, L, Beam Width, Recall and Latency

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ORDER BY alias

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Question of the Day

ORDER BY alias

There is a table tmp_tab: 

CREATE TABLE tmp_tab (
id int,
val int
);
INSERT INTO tmp_tab VALUES
(1, 1),
(2, NULL),
(3, 3),
(4, 4),
(5, 5);
You want to order the rows ids by the following expression: 
    ISNULL(val, id) + 1
Which of the following queries produces the expected ordering and why? (Select all correct)

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