June 2010
Intermediate to advanced
328 pages
7h 51m
English
Content preview from SQL Antipatterns
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Solution: Name Columns Explicitly
Always spell out all the columns you need, instead of relying on wildcards or implicit column lists.
| Implicit-Columns/soln/select-explicit.sql | |
| | SELECT bug_id, date_reported, summary, description, resolution, |
| | reported_by, assigned_to, verified_by, status, priority, hours |
| | FROM Bugs; |
| Implicit-Columns/soln/insert-explicit.sql | |
| | INSERT INTO Accounts (account_name, first_name, last_name, email, |
| | password_hash, portrait_image, hourly_rate) |
| | VALUES ('bkarwin', 'Bill', 'Karwin', 'bill@example.com', |
| | SHA2('xyzzy'), NULL, 49.95); |
All this typing seems burdensome, but it’s worth it in several ways.
Mistake-Proofing
Remember poka-yoke?[20] You make your SQL queries more resistant to the errors and ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.