Editorials

SQLServerCentral Editorial

Where the World Takes You

We're launching into a new year and there are lots of "looking into the future" articles out there. Personally, I'm pretty jazzed for the coming year for any number of reasons (can you say "SQL Server 2022"?). However, I also get a little retrospective at times like this. Now, I'm not going to talk about […]

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2022-01-08

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SQLServerCentral Editorial

Education to solve the tech skills shortage

I’ve been teaching T-SQL to groups of students since 2014 at the non-profit LaunchCode in St. Louis. LaunchCode provides free tech training, paid apprenticeships, and career support to hundreds of people who have the ability and interest but not always the opportunity to land tech careers. For example, not having a college degree can eliminate […]

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2021-12-31

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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)

See possible answers