ZREMRANGEBYRANK

Syntax

  1. ZREMRANGEBYRANK key start stop

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.

ACL categories: @write, @sortedset, @slow

Removes all elements in the sorted set stored at key with rank between start and stop. Both start and stop are 0 -based indexes with 0 being the element with the lowest score. These indexes can be negative numbers, where they indicate offsets starting at the element with the highest score. For example: -1 is the element with the highest score, -2 the element with the second highest score and so forth.

Return

Integer reply: the number of elements removed.

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> ZREMRANGEBYRANK myzset 0 1
  8. (integer) 2
  9. dragonfly> ZRANGE myzset 0 -1 WITHSCORES
  10. 1) "three"
  11. 2) "3"