cloud-fan commented on a change in pull request #26410:
[SPARK-29387][SQL][FOLLOWUP] Fix issues of the multiply and divide for intervals
URL: https://github.com/apache/spark/pull/26410#discussion_r343054962
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/intervalExpressions.scala
##########
@@ -137,7 +139,11 @@ abstract class IntervalNumOperation(
val iu = IntervalUtils.getClass.getName.stripSuffix("$")
s"""
try {
- ${ev.value} = $iu.$operationName($interval, $num);
+ if ($num != 0) {
+ ${ev.value} = $iu.$operationName($interval, $num);
+ } else {
+ ${ev.isNull} = true;
Review comment:
Now I'm confused. What's the root cause of this bug? If the type coercion
problem is fixed, why do we still hit bugs? Why the `0` becomes double?
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