Method select_hashes

perro_source/core/perro_csv/src/lib.rs:519–526

(mut self, cols: &[u64])

    Text {
        col: usize,
        op: CsvCompare,
        value: String,
        hash: u64,
    },
    Number {
        col: usize,
        op: CsvCompare,
        value: f64,
    },
    Contains {
        col: usize,