Function mz_repr::row::checked_timestamp_nanos

fn checked_timestamp_nanos(dt: NaiveDateTime) -> Option<i64>

Returns an i64 representing a NaiveDateTime, if said i64 can be round-tripped back to a NaiveDateTime.

The only exotic NDTs for which this can’t happen are those that are hundreds of years in the future or past, or those that represent a leap second. (Note that Materialize does not support leap seconds, but this module does).