Scripts

Technical Article

Data Sample Scripter

Generates code for INSERTs as well as generating data form tables for INSERT. Will also find and script all dependencies recursively, present all scripts in dependency order, and generate a reverse-dependency order set of conditional DELETE statements.

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2016-06-13 (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