original
http://redis.io/commands/zrevrangebyscore
Introduction
Return a range of members in a sorted set, by score, with scores ordered from high to low.
Returns a range of members in a sorted set, according to the score, from high to low.
grammar
ZREVRANGEBYSCORE key max min [WITHSCORES] [LIMIT offset count]
Version
Available since 2.2.0.
Available since version 2.2.0.
time complexity
Time complexity: O(log(N)+M) with N being the number of elements in the sorted set and M the number of elements being returned. If M is constant (e.g. always asking for the first 10 elements with LIMIT), you can consider it O(log(N)).
O(log(N)+M): N is the number of elements in the sorted set and M is the number of elements returned. If M is constant, you can consider the time complexity to be O(log(N)).
describe
Returns all the elements in the sorted set at key with a score between max and min (including elements with score equal to max or min). In contrary to the default ordering of sorted sets, for this command the elements are considered to be ordered from high to low scores.
Returns all elements in the sorted set with scores between max and min (including elements with scores equal to max and min). This command is sorted by score from high to low.
The elements having the same score are returned in reverse lexicographical order.
Elements with the same score are returned in reverse lexicographical order.
Apart from the reversed ordering, ZREVRANGEBYSCORE is similar to ZRANGEBYSCORE.
ZREVRANGEBYSCORE is similar to ZRANGEBYSCORE except that the sorting is reversed.
return value
Array reply: list of elements in the specified score range (optionally with their scores).
Array: A list of elements within the specified score range.
example
redis> ZADD myzset 1 "one"
(integer) 1
redis> ZADD myzset 2 "two"
(integer) 1
redis> ZADD myzset 3 "three"
(integer) 1
redis> ZREVRANGEBYSCORE myzset +inf -inf
1) "three"
2) "two"
3) "one"
redis> ZREVRANGEBYSCORE myzset 2 1
1) "two"
2) "one"
redis> ZREVRANGEBYSCORE myzset 2 (1
1) "two"
redis> ZREVRANGEBYSCORE myzset (2 (1
(empty list or set)
redis>