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The following commit(s) were added to refs/heads/master by this push:
new bdf7d2779a [fix](Nereids) aggregate always report has 1 row count
(#14236)
bdf7d2779a is described below
commit bdf7d2779a207cbd4e6507fe5a275385e2c9df7a
Author: minghong <[email protected]>
AuthorDate: Mon Nov 14 16:27:55 2022 +0800
[fix](Nereids) aggregate always report has 1 row count (#14236)
the data structure of new stats is changed, bug Agg-estimation is not
changed
---
.../src/main/java/org/apache/doris/nereids/stats/StatsCalculatorV2.java | 1 +
1 file changed, 1 insertion(+)
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/nereids/stats/StatsCalculatorV2.java
b/fe/fe-core/src/main/java/org/apache/doris/nereids/stats/StatsCalculatorV2.java
index 005e5963da..a3b97c01e3 100644
---
a/fe/fe-core/src/main/java/org/apache/doris/nereids/stats/StatsCalculatorV2.java
+++
b/fe/fe-core/src/main/java/org/apache/doris/nereids/stats/StatsCalculatorV2.java
@@ -331,6 +331,7 @@ public class StatsCalculatorV2 extends
DefaultPlanVisitor<StatsDeriveResult, Voi
StatsDeriveResult childStats = groupExpression.childStatistics(0);
Map<Id, ColumnStatistic> childSlotToColumnStats =
childStats.getSlotIdToColumnStats();
double resultSetCount = groupByExpressions.stream().flatMap(expr ->
expr.getInputSlots().stream())
+ .map(Slot::getExprId)
.filter(childSlotToColumnStats::containsKey).map(childSlotToColumnStats::get).map(s
-> s.ndv)
.reduce(1d, (a, b) -> a * b);
if (resultSetCount <= 0) {
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