Many Rails developers don't understand what causes ActiveRecord to actually execute a SQL query. Let's look at three common cases: misuse of the count method...| www.speedshop.co
Namespace| api.rubyonrails.org
Active Record Calculations.| api.rubyonrails.org
WhereChain objects act as placeholder for queries in which where does not have any parameter. In this case, where can be chained to return a new relation.| api.rubyonrails.org