Thread:Talk:Requests for comment/Database field for checksum of page text/Hash in revision table or text table ?/reply

No, some of the use cases for this are primarily aimed at tasks which involve looking at a large number of revisions and comparing equality. In essence things which to do right now you'd have to extract the full text for every one of those revisions. Our 'text table' is really only the default location for text an external store can be used instead, so iirc we don't join on the text table. Putting the checksum alongside the text sounds like it would mean that we would end up right back to making hundreds of requests to the text storage.