public Double getMaxRowCount(Intersect rel, RelMetadataQuery mq) {
// max row count is the smallest of the inputs
Double rowCount = null;
for (RelNode input : rel.getInputs()) {
Double partialRowCount = mq.getMaxRowCount(input);
if (rowCount == null || partialRowCount != null && partialRowCount < rowCount) {
rowCount = partialRowCount;
}
}
return rowCount;
}
public List<Double> averageColumnSizes(Intersect rel, RelMetadataQuery mq) {
return mq.getAverageColumnSizes(rel.getInput(0));
}