gengliangwang commented on a change in pull request #30445:
URL: https://github.com/apache/spark/pull/30445#discussion_r528459746



##########
File path: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala
##########
@@ -493,6 +493,13 @@ object DateTimeUtils {
     Decimal(getMicroseconds(micros, zoneId), 8, 6)
   }
 
+  /**
+   * Returns the number of seconds since 1970-01-01 00:00:00-00 (can be 
negative).
+   */
+  def getSecondsAfterEpoch(micros: Long, zoneId: ZoneId): Double = {
+    micros.toDouble / MICROS_PER_SECOND

Review comment:
       +1, thanks for pointing it out 👍 




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