morrySnow commented on code in PR #40654:
URL: https://github.com/apache/doris/pull/40654#discussion_r1766085281
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fe/fe-core/src/main/java/org/apache/doris/nereids/stats/ExpressionEstimation.java:
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@@ -274,13 +274,13 @@ public ColumnStatistic
visitBinaryArithmetic(BinaryArithmetic binaryArithmetic,
int exprResultTypeWidth = binaryArithmetic.getDataType().width();
double dataSize = exprResultTypeWidth * rowCount;
if (binaryArithmetic instanceof Add) {
- return new
ColumnStatisticBuilder().setCount(rowCount).setNdv(ndv).setAvgSizeByte(leftColStats.avgSizeByte)
Review Comment:
why not set count? count will be 0?
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