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[opt](nereids)using mv's derived stats #35721

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Merged
morrySnow merged 3 commits into from
Jun 12, 2024
Merged

[opt](nereids)using mv's derived stats #35721

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3d0ac0c
using mv's derived stats
englefly May 31, 2024
47567a3
is mv used
englefly Jun 4, 2024
a37e32b
mv.row > table.row
englefly Jun 4, 2024
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15 changes: 15 additions & 0 deletions fe/fe-core/src/main/java/org/apache/doris/nereids/stats/StatsCalculator.java
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Original file line number Diff line number Diff line change
Expand Up @@ -754,6 +754,21 @@ private ColumnStatistic getColumnStatistic(TableIf table, String colName, long i
// 2. Consider the influence of runtime filter
// 3. Get NDV and column data size from StatisticManger, StatisticManager doesn't support it now.
private Statistics computeCatalogRelation(CatalogRelation catalogRelation) {
if (catalogRelation instanceof LogicalOlapScan) {
LogicalOlapScan olap = (LogicalOlapScan) catalogRelation;
if (olap.getSelectedIndexId() != olap.getTable().getBaseIndexId()) {
// mv is selected, return its estimated stats
Optional<Statistics> optStats = cascadesContext.getStatementContext()
.getStatistics(olap.getRelationId());
if (optStats.isPresent()) {
double actualRowCount = catalogRelation.getTable().getRowCountForNereids();
if (actualRowCount > optStats.get().getRowCount()) {
return optStats.get();
}
}
}
}

List<Slot> output = catalogRelation.getOutput();
ImmutableSet.Builder<SlotReference> slotSetBuilder = ImmutableSet.builderWithExpectedSize(output.size());
for (Slot slot : output) {
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