127.0.0.1:11222> zadd z1 1 a 2 b 3 c 4 d
(integer) 4
127.0.0.1:11222> ZRANGE z1 [b [c BYLEX
(empty array)
127.0.0.1:11222> ZRANGE z1 [a (d BYLEX
1) "a"

127.0.0.1:6379> zadd z1 1 a 2 b 3 c 4 d
(integer) 4
127.0.0.1:6379> ZRANGE z1 [b [c BYLEX
1) "b"
2) "c"
127.0.0.1:6379> ZRANGE z1 [a (d BYLEX
1) "a"
2) "b"
3) "c"