Transforms list columns to separate columns, possibly by reference. The original columns are removed from the returned table. All non-atomic objects in the list columns are expand to new list column.
unnest(x, cols, prefix = NULL)
x | :: |
---|---|
cols | :: |
prefix | :: |
x = data.table::data.table( id = 1:2, value = list(list(a = 1, b = 2), list(a = 2, b = 2)) ) print(x)#> id value #> 1: 1 <list> #> 2: 2 <list>unnest(x, "value")#> id a b #> 1: 1 1 2 #> 2: 2 2 2