alamb commented on code in PR #6789:
URL: https://github.com/apache/arrow-datafusion/pull/6789#discussion_r1245626134
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datafusion/physical-expr/src/datetime_expressions.rs:
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@@ -219,42 +219,49 @@ fn quarter_month(date: &NaiveDateTime) -> u32 {
/// account that some granularities are not uniform durations of time
/// (e.g. months are not always the same lengths, leap seconds, etc)
fn date_trunc_coarse(granularity: &str, value: i64) -> Result<i64> {
- if granularity == "millisecond" || granularity == "microsecond" {
Review Comment:
this special case was what is confusing. I removed this one and inlined the
`with_nanosecond(0)` call for all the other cases
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