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pick 40084 40200 40178 #41573

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Oct 10, 2024
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pick 40084 40200 40178 #41573

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pick 40084 40200 40178
englefly Oct 9, 2024
6b52476
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englefly Oct 10, 2024
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7 changes: 6 additions & 1 deletion 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 @@ -47,6 +47,7 @@
import org.apache.doris.nereids.types.DataType;
import org.apache.doris.nereids.types.DateTimeType;
import org.apache.doris.nereids.types.coercion.RangeScalable;
import org.apache.doris.qe.ConnectContext;
import org.apache.doris.statistics.ColumnStatistic;
import org.apache.doris.statistics.ColumnStatisticBuilder;
import org.apache.doris.statistics.StatisticRange;
Expand Down Expand Up @@ -605,10 +606,14 @@ private Statistics estimateBinaryComparisonFilter(Expression leftExpr, DataType
double sel = leftRange.getDistinctValues() == 0
? 1.0
: intersectRange.getDistinctValues() / leftRange.getDistinctValues();
double lowerBound = RANGE_SELECTIVITY_THRESHOLD;
if (ConnectContext.get() != null) {
lowerBound = ConnectContext.get().getSessionVariable().rangeFilterLowerBound;
}
if (!(dataType instanceof RangeScalable) && (sel != 0.0 && sel != 1.0)) {
sel = DEFAULT_INEQUALITY_COEFFICIENT;
} else {
sel = Math.max(sel, RANGE_SELECTIVITY_THRESHOLD);
sel = Math.max(sel, lowerBound);
}
sel = getNotNullSelectivity(leftStats, sel);
updatedStatistics = context.statistics.withSel(sel);
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4 changes: 4 additions & 0 deletions fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
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Expand Up @@ -1364,6 +1364,10 @@ public void setEnableLeftZigZag(boolean enableLeftZigZag) {

public String ignoreRuntimeFilterIds = "";

@VariableMgr.VarAttr(name = "range_filter_lower_bound",
description = {"", ""})

public double rangeFilterLowerBound = 0.01;
@VariableMgr.VarAttr(name = STATS_INSERT_MERGE_ITEM_COUNT, flag = VariableMgr.GLOBAL, description = {
"控制统计信息相关INSERT攒批数量", "Controls the batch size for stats INSERT merging."
}
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