unpack_list(lists: list, {
    "param": value,
    ...
}) -> (list_items: dataset)

The first output column will contain the items in the first position of the input lists, the second column items in the second position etc.

unpack_list(lists: list, {
    "param": value,
    ...
}) -> (list_items: dataset)
​
start
integer

List index of first element to extract.

Values must be in the following range:

0 ≤ start < inf
​
n_items
integer
default:
"1"

Total number of consecutive items to extract from lists.

Values must be in the following range:

1 ≤ n_items < inf
​
prefix
[string, null]

Prefix for names of generated columns. By default, will use the output dataset’s name concatenated with “_0”, “_1” etc. for the first extracted column, the second column etc. respectively. I.e. you name the output dataset of this step list_items, then its columns will be named “list_items_0”, “list_items_1” etc. If a prefix is provided, this will be used instead of the output dataset’s name.

​
column_names
array[string]

A list of names for the columns in the output dataset. Will be used only if the number of names passed matches the n_items parameter.

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