cloud-fan commented on a change in pull request #26465: [SPARK-29390][SQL] Add
the justify_days(), justify_hours() and justif_interval() functions
URL: https://github.com/apache/spark/pull/26465#discussion_r345051840
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/IntervalUtils.scala
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@@ -637,4 +637,39 @@ object IntervalUtils {
new CalendarInterval(totalMonths, totalDays, micros)
}
+
+ /**
+ * Adjust interval so 30-day time periods are represented as months
+ */
+ def justifyDays(interval: CalendarInterval): CalendarInterval = {
+ val months = Math.addExact(interval.months, interval.days /
DAYS_PER_MONTH.toInt)
Review comment:
if `days` is negative, will we end like `-1 month 2 days`?
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