Struct datafusion::physical_plan::expressions::IsNullExpr

pub struct IsNullExpr { /* fields omitted */ }

IS NULL expression

Implementations

impl IsNullExpr

pub fn new(arg: Arc<dyn PhysicalExpr>) -> Self

Create new not expression

pub fn arg(&self) -> &Arc<dyn PhysicalExpr>

Get the input expression

Trait Implementations

impl Debug for IsNullExpr

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

Formats the value using the given formatter.

impl Display for IsNullExpr

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

Formats the value using the given formatter.

impl PhysicalExpr for IsNullExpr

fn as_any(&self) -> &dyn Any

Return a reference to Any that can be used for downcasting

fn data_type(&self, _input_schema: &Schema) -> Result<DataType>

Get the data type of this expression, given the schema of the input

fn nullable(&self, _input_schema: &Schema) -> Result<bool>

Determine whether this expression is nullable, given the schema of the input

fn evaluate(&self, batch: &RecordBatch) -> Result<ColumnarValue>

Evaluate an expression against a RecordBatch