Database Redis Casandr开发者_开发知识库a MySQL (RDS, while nice, isn\'t quite agile enough) (other besides RDS)
I have a database with 3 tables in this structure, CREATE TABLE `mailers` ( `id` int(11) NOT NULL AUTO_INCREMENT,
I currently have some SQL that should return 3 rows of data but returns 6 (3 rows repeated twice). I believe this is down to my syntax and want to try and build the query using basic joins, currently
I am trying to lay out the concept for a Relational DB and I ran into some conceptual Problems: If I have multiple discrete Entities that are \"nested\" in each other/have a hierarchy e.g.:
In relation to a discussion started at this question, I\'ve decided to put this up as a community wiki question.
I\'m trying to make an app that does testing similiar to what you would experience in school. I have a model Question, which can belong to either an Exam, Quiz, or Assignment.
Yeah, kinda dumb title, b开发者_如何学Pythonut I found it hard to describe my problem. I have the following tables:
I am probably going to get slaughtered for this, and told to read the manual (which I have, but it has not helped my understanding).
I did just come up with the following idea, but I lack the knowledge to say if it is applicable to a production application.
In MySQL Im having two tables: PRODUCTS (id, Name) SEEALSO (id, prodLeft, prodRight) SEEALSO defines which PRODUCTS are related together and are represented as binded fileds \"prodLeft\"-\"prodRig
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