@Override
public double estimateRowCount(RelMetadataQuery mq) {
return RelMdUtil.estimateFilteredRows(getInput(), program, mq);
}
@Override
public double estimateRowCount(RelMetadataQuery mq) {
return Util.first(RelMdUtil.getSemiJoinRowCount(mq, left, right, joinType, condition), 1D);
}