Function transform::column_knowledge::optimize

pub fn optimize(
    expr: &mut MirScalarExpr, 
    input_type: &RelationType, 
    column_knowledge: &[DatumKnowledge], 
    knowledge_stack: &mut Vec<DatumKnowledge>
) -> DatumKnowledge

Attempts to optimize

knowledge_stack is a pre-allocated vector but is expected not to contain any elements.