Editorials

SQLServerCentral Editorial

Now Is a Good Time for Choices

The whole world is going through some interesting times. Chances are pretty high that you’re working from home and your principal interaction with others is through virtual means. I know I’m that way as is my company, Redgate Software. It can be challenging or rewarding, depending on how you go about it. What’s even more […]

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2020-03-28

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SQLServerCentral Editorial

Azure Data Studio and Deployment Notebooks

Azure Data Studio (ADS) is a cross-platform tool that you can use to run T-SQL queries much as you have done using SQL Server Management Studio. No, the databases do not need to be hosted in Azure; the tool works fine for on-premises SQL Servers as well. I’ve started using ADS more as I teach […]

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2020-03-21

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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