dfr sum for expression

Creates a sum expression for an aggregation or aggregates columns to their sum value.

WARNING

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

Signature

> dfr sum {flags}

Input/output types:

inputoutput
anyany

Examples

Sums all columns in a dataframe

> [[a b]; [6 2] [1 4] [4 1]] | dfr into-df | dfr sum
╭───┬────┬───╮
 # │ a  │ b │
├───┼────┼───┤
 0  11  7 
╰───┴────┴───╯

Sum aggregation for a group-by

> [[a b]; [one 2] [one 4] [two 1]]
    | dfr into-df
    | dfr group-by a
    | dfr agg (dfr col b | dfr sum)
╭───┬─────┬───╮
 # │  a  │ b │
├───┼─────┼───┤
 0  one  6 
 1  two  1 
╰───┴─────┴───╯