ujc714 commented on a change in pull request #2034:
URL: https://github.com/apache/hive/pull/2034#discussion_r586308451
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/udf/UDFSubstr.java
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@@ -174,8 +174,10 @@ public StatEstimator getStatEstimator() {
}
private Optional<Double> getRangeWidth(Range range) {
- if (range.minValue != null && range.maxValue != null) {
- return Optional.of(range.maxValue.doubleValue() -
range.minValue.doubleValue());
+ if (range != null) {
Review comment:
Thanks for your suggestion. Added test case substr_estimate_range.q.
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