will it automatically add index to forien_keys ?

rubyonrails-talk
1

has_may ,belongs_to ,etc in those Model association ,will it automatically add index to forien_keys ?

2

Pokkai Dokkai wrote:

has_may ,belongs_to ,etc in those Model association ,will it automatically add index to forien_keys ?

no, you need to use the add_index :table, :column_name in your migrations