ZREM

Syntax

1. 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

1. dragonfly> ZADD myzset 1 "one"
2. (integer) 1
3. dragonfly> ZADD myzset 2 "two"
4. (integer) 1
5. dragonfly> ZADD myzset 3 "three"
6. (integer) 1
7. dragonfly> ZREM myzset "two"
8. (integer) 1
9. dragonfly> ZRANGE myzset 0 -1 WITHSCORES
10. 1) "one"
11. 2) "1"
12. 3) "three"
13. 4) "3"