ZDIFF

ZDIFF

ZDIFF numkeys key [key ...] [WITHSCORES]

Available since:

6.2.0

Time complexity:

O(L + (N-K)log(N)) worst case where L is the total number of elements in all the sets, N is the size of the first set, and K is the size of the result set.

ACL categories:

@read, @sortedset, @slow,

This command is similar to ZDIFFSTORE, but instead of storing the resulting sorted set, it is returned to the client.

Return

Array reply: the result of the difference (optionally with their scores, in case the WITHSCORES option is given).

Examples

ZADD zset1 1 "one"
ZADD zset1 2 "two"
ZADD zset1 3 "three"
ZADD zset2 1 "one"
ZADD zset2 2 "two"
ZDIFF 2 zset1 zset2
ZDIFF 2 zset1 zset2 WITHSCORES