SQLServerCentral Editorial

Password Help

Passwords control most of our access to computer systems and provide some level of authentication, but their security depends heavily on their strength and privacy. Steve Jones says you can set a good example for others and hemp improve security on all systems.

SQLServerCentral Editorial

The Redmond Agenda

The things that are important to Microsoft might not be the same ones that are important to you as a customer. However Steve Jones thinks that the potential changes in the release strategy may be good for data professionals.

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The Lure of Simplicity in IT

A deceptively simple solution to a business re-engineering problem can beguile companies into selecting a compromise that doesn't actually meet all their needs. Simple is great, but not at the expense of functionality. Some IT solutions are complex because the problem is complex, but they can be made conceptually clearer.

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ORDER BY alias

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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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