Direct from Rails4.0 ActiveRecord documentation: Creating an index with a specific method
add_index(:developers, :name, using: 'btree') generates: CREATE INDEX index_developers_on_name ON developers USING btree (name) -- PostgreSQLCREATE INDEX index_developers_on_name USING btree ON developers (name) -- MySQL Note: only supported by PostgreSQL and MySQL On Tuesday, July 2, 2013 1:13:15 PM UTC-4, Linus Pettersson wrote: > > Hi > > I'm sorting some columns like this: MyModel.order("LOWER(column) ASC")... > But these queries are quite slow. I'm on Postgres by the way. > > Does Rails support creating a lowercase index for these situations? I know > Postgres has support for it and I guess I can create one like this (found > on SO): > > execute "CREATE UNIQUE INDEX index_products_on_lower_name ON products USING > btree (lower(name));" > > But does Rails have support for creating it? Don't like to use execute() > if there is a better way :) > > Cheers, > Linus > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscr...@googlegroups.com. To post to this group, send email to rubyonrails-talk@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/c2f87267-c2ef-42ac-a66e-951ce8a566e5%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.