June 2010
Intermediate to advanced
328 pages
7h 51m
English
Content preview from SQL Antipatterns
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
Antipattern: Making Bricks Without Straw
Developers commonly practice the See No Evil antipattern in two forms: first, ignoring the return values of a database API; and second, reading fragments of SQL code interspersed with application code. In both cases, developers fail to use information that is easily available to them.
Diagnoses Without Diagnostics
| See-No-Evil/anti/no-check.php | |
| | <?php |
| ① | $pdo = new PDO("mysql:dbname=test;host=db.example.com", |
| | "dbuser", "dbpassword"); |
| | $sql = "SELECT bug_id, summary, date_reported FROM Bugs |
| | WHERE assigned_to = ? AND status = ?"; |
| ② | $stmt = $dbh->prepare($sql); |
| ③ | $stmt->execute(array(1, "OPEN")); |
| ④ | $bug = $stmt->fetch(); |
This code is concise, but there are several places in this ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.