: Re: Rename Several Aggregated Columns
One way is to rename the columns using the toDF
For eg:
val df = Seq((1, 2),(1,4),(2,3) ).toDF("a","b")
df.printSchema()
val renamedf = df.groupBy('a).agg(sum('b)).toDF("mycola", "mycolb")
renamedf.printSchema(
Good morning. I have a dataframe and would like to group by on two fields, and
perform a sum aggregation on more than 500 fields, though I would like to keep
the same name for the 500 hundred fields (instead of sum(Field)). I do have the
field names in an array. Could anybody help with this
One way is to rename the columns using the toDF
For eg:
val df = Seq((1, 2),(1,4),(2,3) ).toDF("a","b")
df.printSchema()
val renamedf = df.groupBy('a).agg(sum('b)).toDF("mycola", "mycolb")
renamedf.printSchema()
Best regards,
Sunitha
> On Mar 18, 2016, at 9:10 AM,
