Method with_output_ordering

datafusion/datasource/src/file_scan_config/mod.rs:459–462

Set the output ordering of the files The expressions are in terms of the entire table schema (file schema + partition columns), before any projection or filtering from the file scan is applied. This is used for optimization purposes, e.g. to determine if a file scan can satisfy an `ORDER BY` without an additional sort.

(mut self, output_ordering: Vec<LexOrdering>)

    /// This is used for optimization purposes, e.g. to determine if a file scan
    /// can satisfy an `ORDER BY` without an additional sort.
    pub fn with_output_ordering(mut self, output_ordering: Vec<LexOrdering>) -> Self {
        self.output_ordering = output_ordering;
        self
    }

    /// Set the file compression type
    pub fn with_file_compression_type(