polars sum for dataframe
Creates a sum expression for an aggregation or aggregates columns to their sum value.
Signature
> polars sum {flags}
Input/output types:
| input | output |
|---|---|
| polars_expression | polars_expression |
| polars_dataframe | polars_dataframe |
| polars_lazyframe | polars_lazyframe |
Examples
Sums all columns in a dataframe
> [[a b]; [6 2] [1 4] [4 1]] | polars into-df | polars sum | polars collect ╭───┬────┬───╮ │ # │ a │ b │ ├───┼────┼───┤ │ 0 │ 11 │ 7 │ ╰───┴────┴───╯
Sum aggregation for a group-by
> [[a b]; [one 2] [one 4] [two 1]]
| polars into-df
| polars group-by a
| polars agg (polars col b | polars sum)
| polars collect
| polars sort-by a
╭───┬─────┬───╮
│ # │ a │ b │
├───┼─────┼───┤
│ 0 │ one │ 6 │
│ 1 │ two │ 1 │
╰───┴─────┴───╯
Copyright © 2019–2026 The Nushell Project DevelopersLicensed under the MIT License.
https://www.nushell.sh/commands/docs/polars_sum.html
