xzj7019 commented on code in PR #29184:
URL: https://github.com/apache/doris/pull/29184#discussion_r1438156391


##########
fe/fe-core/src/main/java/org/apache/doris/nereids/stats/FilterEstimation.java:
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@@ -222,9 +221,12 @@ private Statistics estimateEqualTo(ComparisonPredicate cp, 
ColumnStatistic stats
         double val = statsForRight.maxValue;
         if (val > statsForLeft.maxValue || val < statsForLeft.minValue) {
             selectivity = 0.0;
+        } else if (statsForRight.isUnKnown) {
+            selectivity = 0.0;

Review Comment:
   ok, will remove it.



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