Method distinct

datafusion/expr/src/logical_plan/builder.rs:898–900

Apply deduplication: Only distinct (different) values are returned)

(self)

    /// Apply deduplication: Only distinct (different) values are returned)
    pub fn distinct(self) -> Result<Self> {
        Ok(Self::new(LogicalPlan::Distinct(Distinct::All(self.plan))))
    }

    /// Project first values of the specified expression list according to the provided
    /// sorting expressions grouped by the `DISTINCT ON` clause expressions.