Function conjunction

datafusion/physical-expr/src/utils/mod.rs:112–116

Create a conjunction of the given predicates. If the input is empty, return a literal true. If the input contains a single predicate, return the predicate. Otherwise, return a conjunction of the predicates (e.g. `a AND b AND c`).

(
    predicates: impl IntoIterator<Item = Arc<dyn PhysicalExpr>>,
)

/// If the input contains a single predicate, return the predicate.
/// Otherwise, return a conjunction of the predicates (e.g. `a AND b AND c`).
pub fn conjunction(
    predicates: impl IntoIterator<Item = Arc<dyn PhysicalExpr>>,
) -> Arc<dyn PhysicalExpr> {
    conjunction_opt(predicates).unwrap_or_else(|| crate::expressions::lit(true))
}

/// Create a conjunction of the given predicates.
/// If the input is empty or the return None.