Method take_dangerous

src/expr/src/relation.rs:1564–1570

Take ownership of `self`, leaving an empty `MirRelationExpr::Constant` with an **incorrect** type. This should only be used if `self` is about to be dropped or otherwise overwritten.

(&mut self)

    ///
    /// This should only be used if `self` is about to be dropped or otherwise overwritten.
    pub fn take_dangerous(&mut self) -> MirRelationExpr {
        let empty = MirRelationExpr::Constant {
            rows: Ok(vec![]),
            typ: ReprRelationType::new(Vec::new()),
        };
        std::mem::replace(self, empty)
    }

    /// Replaces `self` with some logic applied to `self`.
    pub fn replace_using<F>(&mut self, logic: F)