Simplify multi-dimensional data
The Flatten node allows you to convert a nested dataset into a flat table-like structure.
The Flatten node does not effect arrays.
This option lets you specify the character used as the separator between nested keys.
This option allows you to specify the depth of nesting to flatten. A depth of 1 will only flatten the top level of the data, a depth of 2 will flatten the top two levels, and so on.
Return the flattened dataset.