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My month with Release!

Alex and his team are developing a game about software and some of the people who make it. He looks at how games affected his office culture, what he’s learned about designing games to do more than just be fun, and how his team are hoping to share their passion with the developer community.

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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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