englefly commented on code in PR #13873:
URL: https://github.com/apache/doris/pull/13873#discussion_r1011415967
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/processor/post/RuntimeFilterGenerator.java:
##########
@@ -131,6 +137,41 @@ public PhysicalPlan
visitPhysicalHashJoin(PhysicalHashJoin<? extends Plan, ? ext
return join;
}
+ /**
+ * consider L join R on L.a=R.b
+ * runtime-filter: L.a<-R.b is effective,
+ * if R.b.selectivity<1 or b is partly covered by a
+ *
+ * TODO: min-max
+ * @param equalTo join condition
+ * @param join join node
+ * @return true if runtime-filter is effective
+ */
+ private boolean isEffectiveRuntimeFilter(EqualTo equalTo, PhysicalHashJoin
join) {
+ StatsDeriveResult leftStats = ((AbstractPlan)
join.child(0)).getStats();
+ StatsDeriveResult rightStats = ((AbstractPlan)
join.child(1)).getStats();
+ Set<Slot> leftSlots = equalTo.child(0).getInputSlots();
+ if (leftSlots.size() > 1) {
+ return false;
+ }
+ Set<Slot> rightSlots = equalTo.child(1).getInputSlots();
+ if (rightSlots.size() > 1) {
+ return false;
+ }
+ Slot leftSlot = leftSlots.iterator().next();
+ Slot rightSlot = rightSlots.iterator().next();
+ ColumnStat probeColumnStat = leftStats.getColumnStatsBySlot(leftSlot);
+ ColumnStat buildColumnStat =
rightStats.getColumnStatsBySlot(rightSlot);
+ if (probeColumnStat == null || buildColumnStat == null) {
+ probeColumnStat = leftStats.getColumnStatsBySlot(rightSlot);
+ buildColumnStat = rightStats.getColumnStatsBySlot(leftSlot);
Review Comment:
done
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