Method always_true

datafusion/pruning/src/pruning_predicate.rs:601–603

Returns true if this pruning predicate can not prune anything. This happens if the predicate is a literal `true` and literal_guarantees is empty. This can happen when a predicate is simplified to a constant `true`

(&self)

    ///
    /// This can happen when a predicate is simplified to a constant `true`
    pub fn always_true(&self) -> bool {
        is_always_true(&self.predicate_expr) && self.literal_guarantees.is_empty()
    }

    pub fn required_columns(&self) -> &RequiredColumns {
        &self.required_columns