dfr flatten
for lazyframe
An alias for dfr explode
Signature
> dfr flatten {flags} ...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