dfr col for expression

Creates a named column expression.

Signature

> dfr col (column name)

Parameters

• column name: Name of column to be used

Examples

Creates a named column expression and converts it to a nu object

> dfr col a | dfr into-nu
╭───────┬────────╮
│ expr  │ column │
│ value │ a      │
╰───────┴────────╯