Struct datafusion::physical_plan::expressions::NthValue

pub struct NthValue { /* fields omitted */ }

nth_value expression

Implementations

impl NthValue

pub fn first_value(
    name: impl Into<String>,
    expr: Arc<dyn PhysicalExpr>,
    data_type: DataType
) -> Self

Create a new FIRST_VALUE window aggregate function

pub fn last_value(
    name: impl Into<String>,
    expr: Arc<dyn PhysicalExpr>,
    data_type: DataType
) -> Self

Create a new LAST_VALUE window aggregate function

pub fn nth_value(
    name: impl Into<String>,
    expr: Arc<dyn PhysicalExpr>,
    data_type: DataType,
    n: u32
) -> Result<Self>

Create a new NTH_VALUE window aggregate function

Trait Implementations

impl Debug for NthValue

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

Formats the value using the given formatter.