Missing stats info for string fields #35
Description
I noticed when looking at the file metadata that the distinct_count field is missing for string fields. I put together a reproduction with a test file so you can see: https://github.com/mhkeller/pg2parquet-stats-repro
I imagine not everyone could care to collect this information but if it could be turned on with a flag, that would be great.
The min and max field are also missing but those aren't super meaningful for string fields so it makes sense to not spend the extra computation in calculating them.