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A question that came up recently was how to track the query compile time. It’s actually a pretty interesting question because, there aren’t that many ways to tell how...

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Blog Post

Query Compile Time

A question that came up recently was how to track the query compile time. It’s actually a pretty interesting question because, there aren’t that many ways to tell how...

2021-05-19 (first published: )

542 reads

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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