syntax

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SQL Server CREATE TABLE syntax diagrams

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Many of us have seen, on MSDN, the heading 'Syntax', followed by a rash of nested brackets and keywords, enough to put off the most resolute of code-cutters. However, there is a goldmine of information there, and Phil had an ambition to get at it, and share the gold. The result is this article, full of railroad diagrams.

2013-07-01

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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