tustvold commented on code in PR #5006:
URL: https://github.com/apache/arrow-rs/pull/5006#discussion_r1376076286
##########
parquet_derive/src/parquet_field.rs:
##########
@@ -427,13 +427,9 @@ impl Field {
quote! {
::chrono::naive::NaiveDateTime::from_timestamp_millis(vals[i]).unwrap() }
}
Some(ThirdPartyType::ChronoNaiveDate) => {
+ // NaiveDateTime::UNIX_EPOCH.num_days_from_ce() == 719163
quote! {
-
::chrono::naive::NaiveDate::from_num_days_from_ce_opt(vals[i]
- + ((::chrono::naive::NaiveDate::from_ymd_opt(1970, 1,
1).unwrap()
- .signed_duration_since(
- ::chrono::naive::NaiveDate::from_ymd_opt(0, 12,
31).unwrap()
Review Comment:
This caused me some confusion, but it is because days start counting at 1,
not zero :sweat_smile:
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