xzj7019 commented on code in PR #40654:
URL: https://github.com/apache/doris/pull/40654#discussion_r1754156266
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fe/fe-core/src/main/java/org/apache/doris/nereids/stats/StatsCalculator.java:
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@@ -1411,7 +1404,7 @@ private Statistics computeWindow(Window windowOperator) {
private ColumnStatistic unionColumn(ColumnStatistic leftStats, double
leftRowCount, ColumnStatistic rightStats,
double rightRowCount, DataType dataType) {
if (leftStats.isUnKnown() || rightStats.isUnKnown()) {
- return new ColumnStatisticBuilder(leftStats).setCount(leftRowCount
+ rightRowCount).build();
+ return new ColumnStatisticBuilder(leftStats).build();
Review Comment:
row count info will be updated by Statistics and no need to maintain it?
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