polars sort-by for lazyframe
Sorts a lazy dataframe based on expression(s).
Signature
> polars sort-by {flags} ...rest
Flags
-
--reverse, -r {list<bool>}: Reverse sorting. Default is false. -
--nulls-last, -n: Nulls are shown last in the dataframe. -
--maintain-order, -m: Maintains order during sort.
Parameters
-
...rest: Sort expression for the dataframe.
Input/output types:
| input | output |
|---|---|
| polars_dataframe | polars_dataframe |
| polars_lazyframe | polars_lazyframe |
Examples
Sort dataframe by one column
> [[a b]; [6 2] [1 4] [4 1]] | polars into-df | polars sort-by a ╭───┬───┬───╮ │ # │ a │ b │ ├───┼───┼───┤ │ 0 │ 1 │ 4 │ │ 1 │ 4 │ 1 │ │ 2 │ 6 │ 2 │ ╰───┴───┴───╯
Sort column using two columns
> [[a b]; [6 2] [1 1] [1 4] [2 4]] | polars into-df | polars sort-by [a b] -r [false true] ╭───┬───┬───╮ │ # │ a │ b │ ├───┼───┼───┤ │ 0 │ 1 │ 4 │ │ 1 │ 1 │ 1 │ │ 2 │ 2 │ 4 │ │ 3 │ 6 │ 2 │ ╰───┴───┴───╯
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https://www.nushell.sh/commands/docs/polars_sort-by.html
