Scripts

Technical Article

Generate add / alter script for missing / different type columns

This query generate add/alter script for missing or different columns. Execute on source database and copy resultset. Execute generated script on any database (may be all customer databases) Missing columns will be created and different types will change as source schema.

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2016-11-18 (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