pub fn to_nql_predicate(
e: &Expr,
binding: &str,
strict_qual: bool,
) -> Option<String>Expand description
Render e as an NQL predicate over one relation, or None when any part
of it cannot be rendered with semantics NQL is known to match.
strict_qual demands that every column name carry this relation’s
qualifier. With more than one relation in the query an unqualified name may
belong to the other one, and pushing another relation’s predicate into this
scan is a false negative.