Enum JoinKeys 

pub enum JoinKeys {
    On(Vec<String>),
    LeftRight {
        left: Vec<String>,
        right: Vec<String>,
    },
}

Join specification for columns

Variants

On(Vec<String>)

Join on columns with the same name

LeftRight

Join with different column names for left and right

Fields

left: Vec<String>

Column names from left DataFrame

right: Vec<String>

Column names from right DataFrame

Implementations

impl JoinKeys

pub fn on(columns: Vec<String>) -> Self

Create join keys for columns with the same name

pub fn left_right(left: Vec<String>, right: Vec<String>) -> Self

Create join keys with different left and right column names

pub fn left_columns(&self) -> &[String]

Get the left column names

pub fn right_columns(&self) -> &[String]

Get the right column names

Trait Implementations

impl Clone for JoinKeys

fn clone(&self) -> JoinKeys

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for JoinKeys

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.