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[Pick](nereids) pick 28444 stats estimation of lessThan #28824

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Merged
xiaokang merged 1 commit into from
Dec 22, 2023
Merged

[Pick](nereids) pick 28444 stats estimation of lessThan #28824

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4 changes: 4 additions & 0 deletions fe/fe-core/src/main/java/org/apache/doris/nereids/stats/FilterEstimation.java
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Original file line number Diff line number Diff line change
Expand Up @@ -512,6 +512,10 @@ private Statistics estimateColumnLessThanColumn(Expression leftExpr, ColumnStati
context.addKeyIfSlot(rightExpr);
return statistics;
}
if (leftRange.isInfinite() || rightRange.isInfinite()) {
return context.statistics.withSel(DEFAULT_INEQUALITY_COEFFICIENT);
}

double leftOverlapPercent = leftRange.overlapPercentWith(rightRange);
// Left always greater than right
if (leftOverlapPercent == 0) {
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4 changes: 4 additions & 0 deletions fe/fe-core/src/main/java/org/apache/doris/statistics/StatisticRange.java
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Expand Up @@ -239,4 +239,8 @@ public double getDistinctValues() {
return distinctValues;
}

@Override
public String toString() {
return "(" + lowExpr + "," + highExpr + ")";
}
}