>But then [it sucks] Absolutely. I agree with you, I'm just saying it's not trivial to turn a delta encoded format into a nice schema. I mean, I would advise

>But then [it sucks] Absolutely. I agree with you, I'm just saying it's not trivial to turn a delta encoded format into a nice schema. I mean, I would advise against storing deltas as tuples and considering that the schema. If it's at all possible, try to rectangularize your format. If you're using a column store a lot of the redundant data from the denormalisation can be compressed away. If the rectangularisation is lossy then you may need to archive the raw data. This is the hurdle where a lot of people stop and choose schema-on-read since they can't afford the storage requirements for an archive of raw data and a nice analytic format for querying.