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[fix](nereids) new statistics use wrong default selectivity (#14233)

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by default, column selectivity MUST be 1.0, not ZERO
This commit is contained in:
minghong
2022-11-14 16:09:17 +08:00
committed by GitHub
parent fc70179acb
commit cf5e2a2eb6
1 changed files with 3 additions and 1 deletions
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4
fe/fe-core/src/main/java/org/apache/doris/statistics/ColumnStatistic.java
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@ -108,6 +108,7 @@ public class ColumnStatistic {
columnStatisticBuilder.setMaxValue(StatisticsUtil.convertToDouble(col.getType(), max));
columnStatisticBuilder.setMaxExpr(StatisticsUtil.readableValue(col.getType(), max));
columnStatisticBuilder.setMinExpr(StatisticsUtil.readableValue(col.getType(), min));
columnStatisticBuilder.setSelectivity(1.0);
return columnStatisticBuilder.build();
} catch (Exception e) {
LOG.warn("Failed to deserialize column statistics, column not exists", e);
@ -118,7 +119,7 @@ public class ColumnStatistic {
public ColumnStatistic copy() {
return new ColumnStatisticBuilder().setCount(count).setNdv(ndv).setAvgSizeByte(avgSizeByte)
.setNumNulls(numNulls).setDataSize(dataSize).setMinValue(minValue)
.setMaxValue(maxValue).setMinExpr(minExpr).setMaxExpr(maxExpr).build();
.setMaxValue(maxValue).setMinExpr(minExpr).setMaxExpr(maxExpr).setSelectivity(selectivity).build();
}
public ColumnStatistic multiply(double d) {
@ -132,6 +133,7 @@ public class ColumnStatistic {
.setMaxValue(maxValue)
.setMinExpr(minExpr)
.setMaxExpr(maxExpr)
.setSelectivity(selectivity)
.build();
}