How to use lead() in SparkR

[guangw...@gmo.jp]

I need the function lead(), but i could not find the right way to call it.

I tried like this, but get an error.

df <- withColumn(df, "next", lead(df$colA, 1))

the error is:

org.apache.spark.sql.AnalysisException: unresolved operatore 'Project ....

I determined the return of lead(df$colA, 1) is a Column of Dataframe.

Any help is appreciated.

[Shivaram Venkataraman]

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Thanks
Shivaram

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