Hello, yes, sure they can return complex types. For example, the functions collect_list and collect_set return an ArrayType.
On 10 February 2018 at 14:28, kant kodali <kanth...@gmail.com> wrote: > Hi All, > > Can UDAF's return complex types? like say a Map with key as an Integer and > the value as an Array of strings? > > For Example say I have the following *input dataframe* > > id | name | amount > ------------------------- > 1 | foo | 10 > 2 | bar | 15 > 1 | car | 20 > 1 | bus | 20 > > and my *target/output data frame* is > > id | my_sum_along_with_names > ------------------------------------------------------------- > 1 | Map(key -> 50, value -> [foo, car, bus]) > 2 | Map(key -> 15, value -> [bar]) > > I am looking for a UDAF solution so I can use it in my raw sql query. > > Thanks! > > > > > > > > >
