Function between 

pub fn between<'a, V, E, L, H>(
    expr: E,
    low: L,
    high: H,
) -> SQLExpr<'a, V, <V::DialectMarker as DialectTypes>::Bool, NonNull, <<E::Aggregate as AggregateKind>::Or<<L as ComparisonOperand<'a, V, E>>::Aggregate> as AggregateKind>::Or<<H as ComparisonOperand<'a, V, E>>::Aggregate>, (Arg<<E as Expr<'a, V>>::Nullable, <E as ExprSources>::Sources>, (Arg<<L as ComparisonOperand<'a, V, E>>::Nullable, <L as ComparisonOperand<'a, V, E>>::Sources>, Arg<<H as ComparisonOperand<'a, V, E>>::Nullable, <H as ComparisonOperand<'a, V, E>>::Sources>))>
where
    V: SQLParam + 'a,
    E: Expr<'a, V>,
    L: ComparisonOperand<'a, V, E>,
    H: ComparisonOperand<'a, V, E>,
    E::SQLType: Compatible<<L as ComparisonOperand<'a, V, E>>::SQLType> + Compatible<<H as ComparisonOperand<'a, V, E>>::SQLType>,

Range check (BETWEEN), inclusive on both ends.

Renders (expr BETWEEN low AND high). Both bounds must have a SQL type compatible with expr. The result is the dialect’s boolean, NULL when any operand is.

Examples

let working_age = between(users.age, 18, 65);
assert_eq!(working_age.sql(), r#"("users"."age" BETWEEN ? AND ?)"#);