AnalyticEvalStatsDerive.java

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//
//   http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.doris.statistics;

import com.google.common.base.Preconditions;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 * Derive AnalyticEvalNode statistics.
 */
public class AnalyticEvalStatsDerive extends BaseStatsDerive {
    private static final Logger LOG = LogManager.getLogger(AggStatsDerive.class);

    @Override
    protected long deriveRowCount() {
        Preconditions.checkState(!childrenStatsResult.isEmpty());
        rowCount = (long) (rowCount == -1 ? childrenStatsResult.get(0).getRowCount() : rowCount);
        applyConjunctsSelectivity();
        capRowCountAtLimit();
        if (LOG.isDebugEnabled()) {
            LOG.debug("stats AnalyticEval: rowCount={}", rowCount);
        }
        return rowCount;
    }
}