Add column to DataFrame in sparkR

问题:

I would like to add a column filled with a character N in a DataFrame in SparkR. I would do it like that with non-SparkR code :

df$new_column <- "N" 

But with SparkR, I get the following error :

Error: class(value) == "Column" || is.null(value) is not TRUE 

I've tried insane things to manage it, I was able to create a column using another (existing) one with df <- withColumn(df, "new_column", df$existing_column), but this simple thing, nope...

Any help ?

Thanks.

回答1:

The straight solution will be to use SparkR::lit() function:

df_new = withColumn(df, "new_column_name", lit("N")) 

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