englefly commented on code in PR #69028:
URL: https://github.com/apache/doris/pull/69028#discussion_r4312193993
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/stats/StatsCalculator.java:
##########
@@ -384,11 +384,19 @@ public Statistics visitLogicalFilter(LogicalFilter<?
extends Plan> filter, Void
* returns the sum of deltaRowCount for all selected partitions or for the
table.
*/
private long computeDeltaRowCount(OlapScan olapScan) {
+ OlapTable olapTable = olapScan.getTable();
+ // The delta rows are the rows loaded into the base index which the
collected base index row count
+ // doesn't include yet. They are not the rows of an index which
aggregates them: such an index has its
+ // own (usually much smaller) row count, so the delta only applies to
a scan of an index which keeps
+ // one row per base row.
+ if (!TableStatsMeta.keepsOneRowPerBaseRow(olapTable,
olapScan.getSelectedIndexId())) {
+ return 0;
Review Comment:
done
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