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`dfr max` for expression

Creates a max expression or aggregates columns to their max value

Signature

> dfr max {flags}

Input/output types:

input	output
any	any

Examples

Max value from columns in a dataframe

> [[ab]; [62] [14] [41]] |dfr into-df|dfr max
╭───┬───┬───╮
│# │ a │ b │
├───┼───┼───┤
│0│6│4│
╰───┴───┴───╯

Max aggregation for a group-by

> [[ab]; [one2] [one4] [two1]]
|dfr into-df
|dfr group-bya
|dfr agg (dfr colb|dfr max)
╭───┬─────┬───╮
│# │  a  │ b │
├───┼─────┼───┤
│0│one│4│
│1│two│1│
╰───┴─────┴───╯

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

dfr max for expression

Signature

Input/output types:

Examples

`dfr max` for expression