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class AddGroupMilestoneIdIndexes < ActiveRecord::Migration
include Gitlab::Database::MigrationHelpers
disable_ddl_transaction!
DOWNTIME = false
def up
return if index_exists?(:milestones, :group_id)
add_concurrent_foreign_key :milestones, :namespaces, column: :group_id, on_delete: :cascade
add_concurrent_index :milestones, :group_id
end
def down
remove_foreign_key :milestones, column: :group_id
remove_concurrent_index :milestones, :group_id
end
end
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