Interface AggregatePushdownSupport
public interface AggregatePushdownSupport
SPI for declaring that a format can compute aggregates from file-level statistics.
Implementations are queried by the optimizer to determine if aggregates can be
pushed down. The actual computation happens via file footer reads at execution time.
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Nested Class Summary
Nested Classes -
Field Summary
Fields -
Method Summary
Modifier and TypeMethodDescriptioncanPushAggregates(List<Expression> aggregates, List<Expression> groupings)
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Field Details
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UNSUPPORTED
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Method Details
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canPushAggregates
AggregatePushdownSupport.Pushability canPushAggregates(List<Expression> aggregates, List<Expression> groupings)
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