Method project

datafusion/expr/src/logical_plan/builder.rs:582–587

Apply a projection without alias.

(
        self,
        expr: impl IntoIterator<Item = impl Into<SelectExpr>>,
    )

    /// Apply a projection without alias.
    pub fn project(
        self,
        expr: impl IntoIterator<Item = impl Into<SelectExpr>>,
    ) -> Result<Self> {
        project(Arc::unwrap_or_clone(self.plan), expr).map(Self::new)
    }

    /// Apply a projection without alias with optional validation
    /// (true to validate, false to not validate)