gengliangwang commented on a change in pull request #32070:
URL: https://github.com/apache/spark/pull/32070#discussion_r608464102
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/IntervalUtils.scala
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@@ -851,4 +851,36 @@ object IntervalUtils {
}
s"INTERVAL '$sign${absMonths / MONTHS_PER_YEAR}-${absMonths %
MONTHS_PER_YEAR}' YEAR TO MONTH"
}
+
+ /**
+ * Converts a day-time interval as a number of microseconds to its textual
representation
+ * which conforms to the ANSI SQL standard.
+ *
+ * @param micros The number of microseconds, positive or negative
+ * @return Day-time interval string
+ */
+ def toDayTimeIntervalString(micros: Long): String = {
+ var sign = ""
+ var rest = micros
+ if (micros < 0) {
+ if (micros == Long.MinValue) {
Review comment:
nice catch!
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