What I want to do is basically have a user obtain the lock on a record and have it for a specific amount of time so they can make changes to it, like wikipedia. So lets say a wikipedia article gives t
I want to have a \"Customer\" Model with a normal primary key and another column to store a custom \"Customer Number\". In addition, I want the db to handle default Customer Numbers. I think, defining
I have been following documents on how to move from Rails 3 to 3.1 and make it work on Heroku.I used the manual upgrade technique given here: http://webtempest.com/upgrade-rails-3-to-3-1/
I\'m using acts_as_taggable_on in rails and I\'m trying to get a listing of all Products that have yet开发者_JS百科 to be tagged.In MySQL the following query worked:
I\'ve discovered a new thing about Postgres: Composite types. I really like this approach and 开发者_如何学Goit will be very useful for me.
So long story short I\'m starting work on a project and I have a variety of things that I need to setup in order to get started. One of those being PostgreSQL. I\'m trying to get it setup but I\'m run
I know PostgreSQL, unlike MySQL, requires to list all selected fields in the group by clause when using aggregate functions, e.g.
I\'ve searched several questions about migrations and their answers, but I didn\'t find a satisfactory solution.
I have a application, running with MySQL in my local machine. There is a field I define as boolean in Rails,开发者_C百科 which is represent in 0 or 1 in MySQL.
I am trying to use a postgresql database for my rails app. I followed the tutorials provided in this link:
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