原文
http://redis.io/commands/zremrangebyscore
简介
Remove all members in a sorted set within the given scores.
从有序集合中删除指定分数范围内的所有成员。
语法
ZREMRANGEBYSCORE key min max
版本
Available since 1.2.0.
自1.2.0版本可用。
时间复杂度
Time complexity: O(log(N)+M) with N being the number of elements in the sorted set and M the number of elements removed by the operation.
O(log(N)+M)：N是有序集合中元素的数量，M是要删除的元素的数量。
描述
Removes all elements in the sorted set stored at key with a score between min and max (inclusive).
从有序集合中删除分数在min到max之间（包含min和max）的所有元素。
Since version 2.1.6, min and max can be exclusive, following the syntax of ZRANGEBYSCORE.
从Redis 2.1.6开始，min和max可以被排除，与ZRANGEBYSCORE语法相同。
返回值
Integer reply: the number of elements removed.
Integer：删除的元素的数量。
例子
redis> ZADD myzset 1 "one"
(integer) 1
redis> ZADD myzset 2 "two"
(integer) 1
redis> ZADD myzset 3 "three"
(integer) 1
redis> ZREMRANGEBYSCORE myzset -inf (2
(integer) 1
redis> ZRANGE myzset 0 -1 WITHSCORES
1) "two"
2) "2"
3) "three"
4) "3"
redis>