/// <summary>
/// Returns a new DataFrame containing rows in this frame but not in another frame.
/// This is equivalent to `EXCEPT` in SQL.
/// Reference to https://github.com/apache/spark/blob/branch-1.4/python/pyspark/sql/dataframe.py, subtract(self, other)
/// </summary>
/// <param name="otherDataFrame">DataFrame to subtract from this frame.</param>
/// <returns>A new DataFrame containing rows in this frame but not in another frame.</returns>
public DataFrame Subtract(DataFrame otherDataFrame)
{
return
(new DataFrame(dataFrameProxy.Subtract(otherDataFrame.dataFrameProxy), sparkContext));
}
