ZREM key member [member …]
相关命令
- ZADD
- ZCARD
- ZCOUNT
- ZINCRBY
- ZINTERSTORE
- ZLEXCOUNT
- ZRANGE
- ZRANGEBYLEX
- ZRANGEBYSCORE
- ZRANK
- ZREM
- ZREMRANGEBYLEX
- ZREMRANGEBYRANK
- ZREMRANGEBYSCORE
- ZREVRANGE
- ZREVRANGEBYSCORE
- ZREVRANK
- ZSCAN
- ZSCORE
- ZUNIONSTORE
Available since 1.2.0.
时间复杂度: O(M*log(N)) with N being the number of elements in the sorted set and M the number of elements to be removed.
Removes the specified members from the sorted set stored at key
. Non existing members are ignored.
An error is returned when key
exists and does not hold a sorted set.
返回值
Integer reply, specifically:
- The number of members removed from the sorted set, not including non existing members.
History
>= 2.4
: Accepts multiple elements. In Redis versions older than 2.4 it was possible to remove a single member per call.
例子
redis> ZADD myzset 1 "one"
- (integer) 1
redis> ZADD myzset 2 "two"
- (integer) 1
redis> ZADD myzset 3 "three"
- (integer) 1
redis> ZREM myzset "two"
- (integer) 1
redis> ZRANGE myzset 0 -1 WITHSCORES
- 1) "one"
- 2) "1"
- 3) "three"
- 4) "3"
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