private static OperatorCreator insertCreator(final RowType rowType, int startID, int count) {
final Row[] rows = new Row[count];
for(int i = 0; i < count; ++i) {
rows[i] = new TestRow(rowType, startID + i, startID + i);
}
return new OperatorCreator() {
@Override
public Operator create(Schema schema) {
RowType outType = schema.tableRowType(rowType.typeId());
return insert_Returning(valuesScan_Default(bindableRows(rows), outType));
}