versioning

External Article

Database Branching and Merging Strategies

  • Article

Source control will allow you to maintain branches in the development of your database, but the subsequent merge isn't pain-free. How can the database developer support the rapid development and delivery of features in an application? Versioning, branching and merging is part of the solution, but what about the rest of the solution?

2014-07-02

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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