How to use

getSemiJoinRowCount

method

in

org.apache.calcite.rel.metadata.RelMdUtil

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

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