Blog Post

Don't mess with success or Everybody lies.

Imagine that you have a table of customers
createtable Customer
(
Name varchar(30),
LastName varchar(30),
Title varchar(30)
);
go
insertinto Customer values('Alex','Smith','Mr.');
insertinto Customer values('John','Doe','Dr.');
goNow you selecting list...

2014-06-10 (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