canvas-lms/db/migrate/20200328164010_add_better_u...

24 lines
707 B
Ruby

# frozen_string_literal: true
class AddBetterUserPreferenceValueIndex < ActiveRecord::Migration[5.2]
tag :postdeploy
disable_ddl_transaction!
def up
UserPreferenceValue.where(value: UserPreferenceValue::EXTERNAL).delete_all
DataFixup::DeleteDuplicateRows.run(UserPreferenceValue.where(sub_key: nil), :user_id, :key)
add_index :user_preference_values,
[:user_id, :key],
unique: true,
where: "sub_key IS NULL",
name: "index_user_preference_values_on_key_no_sub_key",
algorithm: :concurrently
end
def down
remove_index :user_preference_values, name: "index_user_preference_values_on_key_no_sub_key"
end
end