Method restore

datafusion/expr/src/expr_rewriter/mod.rs:361–373

Ensures the qualified name of the rewritten expression is preserved

(self, expr: Expr)

impl SavedName {
    /// Ensures the qualified name of the rewritten expression is preserved
    pub fn restore(self, expr: Expr) -> Expr {
        match self {
            SavedName::Saved { relation, name } => {
                let (new_relation, new_name) = expr.qualified_name();
                if new_relation != relation || new_name != name {
                    expr.alias_qualified(relation, name)
                } else {
                    expr
                }
            }
            SavedName::None => expr,
        }
    }
}

#[cfg(test)]