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SQLServerCentral Editorial

Goodbye to PASS

On December 17, the PASS organization announced the news that it would cease operations on January 15, 2021. Since the announcement, folks have been scrambling to figure out how to keep their user groups and events going or downloading recordings. By the way, if you need assistance with your user group, please reach out to […]

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2020-12-26

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SQLServerCentral Editorial

Merry Christmas 2020

Merry Christmas today. Happy Holidays to all of you, for whichever holiday you celebrate this time of year. It's been a long, hard year, but I hope you are healthy and happy as we close out 2020. Hopefully next year is more enjoyable for all of us.

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2020-12-25

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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