datafusion_physical_plan::execution_plan::expressions

Function try_cast

Source 
pub fn try_cast(
    expr: Arc<dyn PhysicalExpr>,
    input_schema: &Schema,
    cast_type: DataType,
) -> Result<Arc<dyn PhysicalExpr>, DataFusionError>
Expand description

Return a PhysicalExpression representing expr casted to cast_type, if any casting is needed.

Note that such casts may lose type information