f-forcher-natzka commented on issue #303:
URL: https://github.com/apache/arrow-julia/issues/303#issuecomment-1066925143
In terms of actual raw numbers, Arrow Date specification is the number of
days since 1970, while Julia Date seems to be the number of days since 1 AD. So
they are indeed different. When I read from a table like this
`t=Arrow.Table("data/flat2.arrow", convert=false)`
I do get `Arrow.Date{Arrow.Flatbuf.DateUnitModule.DAY, Int32}` as the
datatype indeed.
However it appears that there is no similar `convert` flag when writing this
same table with Arrow.write, as I still get the same error reading it in Rust
`Cannot create polars series from Extension("JuliaLang.Date", Date32, Some(""))
type`. I think we should have a way to serialize in the original Arrow format
and not use custom types, in this case.
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