Method dml_to_sql

datafusion/sql/src/unparser/plan.rs:2012–2014

(&self, plan: &LogicalPlan)

    }

    fn dml_to_sql(&self, plan: &LogicalPlan) -> Result<ast::Statement> {
        not_impl_err!("Unsupported plan: {plan:?}")
    }

    /// Generates appropriate projection expression for empty projection lists.
    /// Returns an empty vec for dialects supporting empty select lists,