Hmm. I think my problem is a little more complex. I'm using https://github.com/databricks/spark-redshift and when I read from JSON file I got this schema.
root |-- app: string (nullable = true) |-- ct: long (nullable = true) |-- event: struct (nullable = true) | |-- attributes: struct (nullable = true) | | |-- account: string (nullable = true) | | |-- accountEmail: string (nullable = true) | | |-- accountId: string (nullable = true) I want to transform the Column *event* into String (formatted as JSON). I was trying to use udf but without success. On Fri, Mar 11, 2016 at 1:53 PM Tristan Nixon <st...@memeticlabs.org> wrote: > Have you looked at DataFrame.write.json( path )? > > https://spark.apache.org/docs/latest/api/scala/index.html#org.apache.spark.sql.DataFrameWriter > > > On Mar 11, 2016, at 7:15 AM, Caires Vinicius <caire...@gmail.com> wrote: > > > > I have one DataFrame with nested StructField and I want to convert to > JSON String. There is anyway to accomplish this? > >
