search for: alpha_id

Hello, I have uploaded a csv file that looks like this: > gc alpha_id beta_id 1 142053 1 2 9454 1 3 295618 2 4 42691 2 5 389224 3 6 9455 3 The alpha_id contains 310660 unique values and the beta_id contains 17431 unique values. The number of rows adds up to more than 1.3 million. Now I...

My understanding is that, given tables Alpha and Beta that the table which holds the 1-to-1 relation will be called Alpha_Beta (or is it alpha_beta?). So far so good. alpha_beta will have, lets say, two fields: alpha_id and beta_id. Seems that it''d be a good idea for those two fields to form a compound primary key, ensuring there are no duplicates. However, RoR doesn''t support compound primary keys. So, does table alpha_beta require its own id for a primary key? If so, that''s what...

Hi, i''m fairly new to ruby on rails, and i know the question at hand may seem simple at first, but i''m getting really caught up in trying to understand this and the docs aren''t giving me answer. i actually thought i knew how the sql commands work (like :include, :conditions, :etc) but obviously, i don''t. there are three models M1, M2, M3 joined by a habtam