ZREM

Syntax

ZREM key member [member ...]

Time complexity: O(M*log(N)) with N being the number of elements in the sorted set and M the number of elements to be removed.

ACL categories: @write, @sortedset, @fast

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.

Return

Integer reply, specifically:

• The number of members removed from the sorted set, not including non existing members.

Examples

dragonfly> ZADD myzset 1 "one"
(integer) 1
dragonfly> ZADD myzset 2 "two"
(integer) 1
dragonfly> ZADD myzset 3 "three"
(integer) 1
dragonfly> ZREM myzset "two"
(integer) 1
dragonfly> ZRANGE myzset 0 -1 WITHSCORES
1) "one"
2) "1"
3) "three"
4) "3"