Technical Article

Verify Errorlog

Hi this is my first post on sql....The below procedure will check the current errorlog(past one hour errorlog will be scanned)for the keyword "error" (you can include your own key word) .. If you run the procedure it will look for keyword error in the past one hour... it will be use full for some […]

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2007-09-12 (first published: )

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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