dfr flatten for lazyframe

An alias for dfr explode

Signature

> dfr flatten ...rest

Parameters

• ...rest: columns to flatten, only applicable for dataframes

Input/output types:

input	output
any	any

Examples

Flatten the specified dataframe

> [[id name hobbies]; [1 Mercy [Cycling Knitting]] [2 Bob [Skiing Football]]] | dfr into-df | dfr flatten hobbies | dfr collect
╭───┬────┬───────┬──────────╮
│ # │ id │ name  │ hobbies  │
├───┼────┼───────┼──────────┤
│ 0 │  1 │ Mercy │ Cycling  │
│ 1 │  1 │ Mercy │ Knitting │
│ 2 │  2 │ Bob   │ Skiing   │
│ 3 │  2 │ Bob   │ Football │
╰───┴────┴───────┴──────────╯

Select a column and flatten the values

> [[id name hobbies]; [1 Mercy [Cycling Knitting]] [2 Bob [Skiing Football]]] | dfr into-df | dfr select (dfr col hobbies | dfr flatten)
╭───┬──────────╮
│ # │ hobbies  │
├───┼──────────┤
│ 0 │ Cycling  │
│ 1 │ Knitting │
│ 2 │ Skiing   │
│ 3 │ Football │
╰───┴──────────╯

Tips: Dataframe commands were not shipped in the official binaries by default, you have to build it with --features=dataframe flag