November 2006
Intermediate to advanced
168 pages
3h 17m
German
Content preview from MySQL: kurz & gut
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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.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.
| OPEN |
OPEN Cursor-Name
Öffnet einen zuvor deklarierten Cursor.
Beispiel
# Folgendes Beispiel zeigt die Verwendung eines # Cursors, der die Bücher einer Tabelle mit einer # Blacklist abgleicht und alle Bücher, deren # ID sich nicht auf der Blacklist befindet, in # einer neuen Whitelist-Tabelle speichert. delimiter $$ CREATE PROCEDURE whitelist (IN blacklist VARCHAR(255)) BEGIN DECLARE done INT DEFAULT 0; DECLARE _bookid INT; DECLARE _title VARCHAR(255); DECLARE books_cr CURSOR FOR SELECT bookid, title FROM books ORDER BY title DESC; DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET done = 1; OPEN books_cr; REPEAT FETCH books_cr INTO _bookid, _title; IF NOT done AND NOT FIND_IN_SET(_bookid, blacklist) THEN INSERT INTO whitelist (bookid, title) ...
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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.