Struct datafusion::prelude::ExprFuncBuilder

pub struct ExprFuncBuilder { /* private fields */ }

Implementation of ExprFunctionExt.

See ExprFunctionExt for usage and examples

Implementations

impl ExprFuncBuilder

pub fn build(self) -> Result<Expr, DataFusionError>

Updates and returns the in progress Expr::AggregateFunction or Expr::WindowFunction

Errors:

Returns an error if this builder ExprFunctionExt was used with an Expr variant other than Expr::AggregateFunction or Expr::WindowFunction

Trait Implementations

impl Clone for ExprFuncBuilder

fn clone(&self) -> ExprFuncBuilder

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExprFuncBuilder

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

Formats the value using the given formatter.

impl ExprFunctionExt for ExprFuncBuilder

fn order_by(self, order_by: Vec<Expr>) -> ExprFuncBuilder

Add ORDER BY <order_by>

Note: order_by must be Expr::Sort

fn filter(self, filter: Expr) -> ExprFuncBuilder

Add FILTER <filter>

fn distinct(self) -> ExprFuncBuilder

Add DISTINCT

fn null_treatment( self, null_treatment: impl Into<Option<NullTreatment>>, ) -> ExprFuncBuilder

Add RESPECT NULLS or IGNORE NULLS

fn partition_by(self, partition_by: Vec<Expr>) -> ExprFuncBuilder

Add PARTITION BY

fn window_frame(self, window_frame: WindowFrame) -> ExprFuncBuilder

Add appropriate window frame conditions