I have a column in my example set which contains comma separated hashtags. I want to first split these hashtags and then perform an aggregation on them, for example counting frequently used hashtags.
Right now I'm using Split
operator, but the result of this operator is something like hashtags_1
, hashtags_2
, hashtags_3
and etc, and I don't know how to do an aggregation on all of these columns.
Any help would be greatly appreciated. Thanks.