Method distinct

src/expr/src/relation.rs:1379–1382

Removes all but the first occurrence of each row.

(self)

    /// Removes all but the first occurrence of each row.
    pub fn distinct(self) -> Self {
        let arity = self.arity();
        self.distinct_by((0..arity).collect())
    }

    /// Removes all but the first occurrence of each key. Columns not included
    /// in the `group_key` are discarded.