dfr unique for dataframe or lazyframe

Returns unique values from a dataframe.

Signature

> dfr unique {flags}

Flags

• --subset, -s {any}: Subset of column(s) to use to maintain rows (lazy df)
• --last, -l: Keeps last unique value. Default keeps first value (lazy df)
• --maintain-order, -k: Keep the same order as the original DataFrame (lazy df)

Input/output types:

input	output
any	any

Examples

Returns unique values from a series

> [2 2 2 2 2] | dfr into-df | dfr unique
╭───┬───╮
│ # │ 0 │
├───┼───┤
│ 0 │ 2 │
╰───┴───╯

Creates a is unique expression from a column

> col a | unique

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