englefly commented on code in PR #35875:
URL: https://github.com/apache/doris/pull/35875#discussion_r1636030225
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/stats/StatsCalculator.java:
##########
@@ -745,8 +747,32 @@ private ColumnStatistic getColumnStatistic(TableIf table,
String colName, long i
return ColumnStatistic.UNKNOWN;
}
} else {
+ if (!partitionNames.isEmpty()) {
+ PartitionColumnStatisticBuilder builder = new
PartitionColumnStatisticBuilder();
+ boolean isFirst = true;
+ boolean hasUnknown = false;
+ for (String partitionName : partitionNames) {
+ PartitionColumnStatistic pcolStats =
Env.getCurrentEnv().getStatisticsCache()
+ .getPartitionColumnStatistics(
+ catalogId, dbId, table.getId(), idxId,
partitionName, colName);
+ if (pcolStats.isUnKnown) {
+ hasUnknown = true;
+ break;
+ }
+ if (isFirst) {
+ builder = new
PartitionColumnStatisticBuilder(pcolStats);
+ isFirst = false;
+ } else {
+ builder.merge(pcolStats);
Review Comment:
this check is done in line758
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