/** Infers predicates for an Exchange. */
public RelOptPredicateList getPredicates(Exchange exchange) {
RelNode child = exchange.getInput();
return RelMetadataQuery.getPulledUpPredicates(child);
}
public Double getDistinctRowCount(Exchange rel, ImmutableBitSet groupKey, RexNode predicate) {
return RelMetadataQuery.getDistinctRowCount(rel.getInput(), groupKey, predicate);
}
public List<Double> averageColumnSizes(Exchange rel, RelMetadataQuery mq) {
return mq.getAverageColumnSizes(rel.getInput());
}
/** Infers predicates for an Exchange. */
public RelOptPredicateList getPredicates(Exchange exchange, RelMetadataQuery mq) {
RelNode input = exchange.getInput();
return mq.getPulledUpPredicates(input);
}