xudong963 commented on a change in pull request #1381:
URL: https://github.com/apache/arrow-datafusion/pull/1381#discussion_r758072164
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File path: datafusion/src/physical_plan/datetime_expressions.rs
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@@ -203,6 +203,10 @@ fn date_trunc_single(granularity: &str, value: i64) ->
Result<i64> {
.and_then(|d| d.with_minute(0))
.and_then(|d| d.with_hour(0))
.and_then(|d| d.with_day0(0)),
+ "quarter" => value
Review comment:
If I understand rightly, this means three months? So you also need
`.and_then(|d| d.with_day0(0))`?
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