pub trait AsofJoin: IntoDf {
// Provided method
fn join_asof(
&self,
other: &DataFrame,
left_on: &str,
right_on: &str,
strategy: AsofStrategy,
tolerance: Option<AnyValue<'static>>,
suffix: Option<String>
) -> Result<DataFrame, PolarsError> { ... }
}
Available on crate feature
polars-ops
only.Provided Methods§
sourcefn join_asof(
&self,
other: &DataFrame,
left_on: &str,
right_on: &str,
strategy: AsofStrategy,
tolerance: Option<AnyValue<'static>>,
suffix: Option<String>
) -> Result<DataFrame, PolarsError>
fn join_asof( &self, other: &DataFrame, left_on: &str, right_on: &str, strategy: AsofStrategy, tolerance: Option<AnyValue<'static>>, suffix: Option<String> ) -> Result<DataFrame, PolarsError>
This is similar to a left-join except that we match on nearest key rather than equal keys. The keys must be sorted to perform an asof join