Struct proof_of_sql::sql::transform::ResultExpr

pub struct ResultExpr { /* private fields */ }

The result expression is used to transform the results of a query

Note: both the transformation and result_schema are mutually exclusive operations. So they must not be set at the same time.

Implementations

impl ResultExpr

pub fn new(transformation: Box<dyn RecordBatchExpr>) -> Self

Create a new ResultExpr node with the provided transformation to be applied to the input record batch.

impl ResultExpr

pub fn transform_results( &self, result_batch: RecordBatch, ) -> Option<RecordBatch>

Transform the RecordBatch result of a query using the transformation expression

Trait Implementations

impl Debug for ResultExpr

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ResultExpr

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl DynPartialEq for ResultExpr

fn as_any(&self) -> &dyn Any

fn box_eq(&self, other: &dyn Any) -> bool

impl PartialEq for ResultExpr

fn eq(&self, other: &ResultExpr) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ResultExpr

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ResultExpr