Struct ScalarFunctionLambdaArg 

pub struct ScalarFunctionLambdaArg {
    pub params: Vec<FieldRef>,
    pub body: Arc<dyn PhysicalExpr>,
    pub captures: Option<RecordBatch>,
}

A lambda argument to a ScalarFunction

Fields

params: Vec<FieldRef>

The parameters defined in this lambda

For example, for array_transform([2], v -> -v), this will be vec![Field::new("v", DataType::Int32, true)]

body: Arc<dyn PhysicalExpr>

The body of the lambda

For example, for array_transform([2], v -> -v), this will be the physical expression of -v

captures: Option<RecordBatch>

A RecordBatch containing at least the captured columns inside this lambda body, if any Note that it may contain additional, non-specified columns, but that’s implementation detail

For example, for array_transform([2], v -> v + a + b), this will be a RecordBatch with two columns, a and b

Trait Implementations

impl Clone for ScalarFunctionLambdaArg

fn clone(&self) -> ScalarFunctionLambdaArg

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScalarFunctionLambdaArg

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

Formats the value using the given formatter.