xzj7019 commented on code in PR #41804:
URL: https://github.com/apache/doris/pull/41804#discussion_r1820942095
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fe/fe-core/src/main/java/org/apache/doris/nereids/stats/StatsCalculator.java:
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@@ -502,6 +502,10 @@ private Statistics computeOlapScan(OlapScan olapScan) {
}
checkIfUnknownStatsUsedAsKey(builder);
builder.setRowCount(selectedPartitionsRowCount);
+ } else {
Review Comment:
If the range is not splitted as even distribution, the following will have
skew on estimation; if yes, then the filter estimation based on partition key
will have similar impact on partition estimation; so seems the added logic
seems have no improvement?
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