Method alias_qualified

datafusion/expr/src/expr.rs:1813–1819

Return `self AS name` alias expression with a specific qualifier

(
        self,
        relation: Option<impl Into<TableReference>>,
        name: impl Into<String>,
    )

    /// Return `self AS name` alias expression with a specific qualifier
    pub fn alias_qualified(
        self,
        relation: Option<impl Into<TableReference>>,
        name: impl Into<String>,
    ) -> Expr {
        Expr::Alias(Alias::new(self, relation, name.into()))
    }

    /// Return `self AS name` alias expression with a specific qualifier and metadata
    ///