Trait datafusion::logical_plan::SimplifyInfo

pub trait SimplifyInfo {
    fn is_boolean_type(&self, expr: &Expr) -> Result<bool>;
    fn nullable(&self, expr: &Expr) -> Result<bool>;
    fn execution_props(&self) -> &ExecutionProps;
}

The information necessary to apply algebraic simplification to an Expr. See SimplifyContext for one implementation

Required Methods

fn is_boolean_type(&self, expr: &Expr) -> Result<bool>

returns true if this Expr has boolean type

fn nullable(&self, expr: &Expr) -> Result<bool>

returns true of this expr is nullable (could possibly be NULL)

fn execution_props(&self) -> &ExecutionProps

Returns details needed for partial expression evaluation

Implementors