Comparison method and related product

The embodiment of the invention discloses a comparison method and a related product. The method comprises the following steps: determining target keys corresponding to a plurality of to-be-compared objects by using a public object, wherein the plurality of to-be-compared objects are obtained by flattening a plurality of original to-be-compared objects in one or more files, the plurality of to-be-compared objects are in one-to-one correspondence with the plurality of original to-be-compared objects, values of target keys contained in at least two to-be-compared objects in the plurality of to-be-compared objects are different, or at least one to-be-compared object in the plurality of to-be-compared objects does not contain a target key, and each to-be-compared object in the plurality of to-be-compared objects comprises one or more keys, and each key corresponds to one or more values; and outputting a comparison result of the plurality of to-be-compared objects, wherein the comparison result comprises the value