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[fix](mtmv) Fix aggregate function roll up fail when function is always nullable #52960 #54801

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[fix](mtmv) Fix aggregate function roll up fail when function is always nullable #52960 #54801

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82b4d0f
[fix](mtmv) Fix aggregate function roll up fail when function is alwa…
seawinde Aug 13, 2025
589ae6c
fix code usage
seawinde Aug 14, 2025
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9 changes: 7 additions & 2 deletions ...pache/doris/nereids/rules/exploration/mv/rollup/ContainDistinctFunctionRollupHandler.java
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Expand Up @@ -50,9 +50,14 @@ public class ContainDistinctFunctionRollupHandler extends AggFunctionRollUpHandl
public static final ContainDistinctFunctionRollupHandler INSTANCE = new ContainDistinctFunctionRollupHandler();
public static Set<AggregateFunction> SUPPORTED_AGGREGATE_FUNCTION_SET = ImmutableSet.of(
new Max(true, Any.INSTANCE), new Min(true, Any.INSTANCE),
new Max(true, Any.INSTANCE).withAlwaysNullable(true),
new Min(true, Any.INSTANCE).withAlwaysNullable(true),
new Max(false, Any.INSTANCE), new Min(false, Any.INSTANCE),
new Count(true, Any.INSTANCE), new Sum(true, Any.INSTANCE),
new Avg(true, Any.INSTANCE));
new Max(false, Any.INSTANCE).withAlwaysNullable(true),
new Min(false, Any.INSTANCE).withAlwaysNullable(true),
new Count(true, Any.INSTANCE),
new Sum(true, Any.INSTANCE), new Sum(true, Any.INSTANCE).withAlwaysNullable(true),
new Avg(true, Any.INSTANCE), new Avg(true, Any.INSTANCE).withAlwaysNullable(true));

@Override
public boolean canRollup(AggregateFunction queryAggregateFunction,
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2 changes: 1 addition & 1 deletion regression-test/data/mv_p0/agg_use_key_direct/agg_use_key_direct.out
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Expand Up @@ -12,5 +12,5 @@
-4

-- !select_avg --
-4
-4.0

2 changes: 1 addition & 1 deletion regression-test/suites/mv_p0/agg_use_key_direct/agg_use_key_direct.groovy
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Expand Up @@ -59,5 +59,5 @@ suite ("agg_use_key_direct") {
order_qt_select_min """select min(distinct k3) from agg_use_key_direct"""

mv_rewrite_success("""select avg(distinct k3) from agg_use_key_direct""", "common_mv")
order_qt_select_avg """select min(distinct k3) from agg_use_key_direct"""
order_qt_select_avg """select avg(distinct k3) from agg_use_key_direct"""
}