If you drop other columns (or map to a new df with only that column) and call collect i think you will get what you want. On Fri, 25 Dec 2015 at 10:26 fightf...@163.com <fightf...@163.com> wrote:
> Emm...I think you can do a df.map and store each column value to your list. > > ------------------------------ > fightf...@163.com > > > *发件人：* zml张明磊 <mingleizh...@ctrip.com> > *发送时间：* 2015-12-25 15:33 > *收件人：* user@spark.apache.org > *抄送：* dev-subscr...@spark.apache.org > *主题：* How can I get the column data based on specific column name and > then stored these data in array or list ? > > Hi, > > > > I am a new to Scala and Spark and trying to find relative API in > DataFrame > to solve my problem as title described. However, I just only find this API > *DataFrame.col(colName > : String) : Column * which returns an object of Column. Not the content. > If only DataFrame support such API which like *Column.toArray : Type* is > enough for me. But now, it doesn’t. How can I do can achieve this function > ? > > > > Thanks, > > Minglei. > >
