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# frozen_string_literal: true
class AddFkConstraintToEnvironmentsMergeRequestId < Gitlab::Database::Migration[2.0]
disable_ddl_transaction!
def up
add_concurrent_foreign_key :environments, :merge_requests, column: :merge_request_id, on_delete: :nullify
end
def down
remove_foreign_key_if_exists :environments, column: :merge_request_id
end
end
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