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moebooru/db/migrate/087_add_dimensions_index_on_posts.rb
2018-03-10 18:15:56 +09:00

14 lines
358 B
Ruby

class AddDimensionsIndexOnPosts < ActiveRecord::Migration[5.1]
def self.up
add_index "posts", "width"
add_index "posts", "height"
execute "CREATE INDEX posts_mpixels ON posts ((width*height/1000000.0))"
end
def self.down
remove_index "posts", "width"
remove_index "posts", "height"
execute "DROP INDEX posts_mpixels"
end
end