Method push_column

src/expr/src/interpret.rs:832–835

Restrict the set of possible values in a given column. (By intersecting it with the existing spec.)

(&mut self, id: usize, update: ResultSpec<'a>)

    /// Restrict the set of possible values in a given column. (By intersecting it with the existing
    /// spec.)
    pub fn push_column(&mut self, id: usize, update: ResultSpec<'a>) {
        let range = self.columns.get_mut(id).expect("valid column id");
        *range = range.clone().intersect(update);
    }

    /// Restrict the set of possible values a given unmaterializable func might return. (By
    /// intersecting it with the existing spec.)