- Usage:
-
ZDIFF numkeys key [ key ... ] [ withscores ]
- 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.
- Since:
- 6.2.0
This command is similar to ZDIFFSTORE, but instead of storing the resulting
sorted set, it is returned to the client.
Examples
127.0.0.1:6379> ZADD zset1 1 "one"
(integer) 1
127.0.0.1:6379> ZADD zset1 2 "two"
(integer) 1
127.0.0.1:6379> ZADD zset1 3 "three"
(integer) 1
127.0.0.1:6379> ZADD zset2 1 "one"
(integer) 1
127.0.0.1:6379> ZADD zset2 2 "two"
(integer) 1
127.0.0.1:6379> ZDIFF 2 zset1 zset2
1) "three"
127.0.0.1:6379> ZDIFF 2 zset1 zset2 WITHSCORES
1) "three"
2) "3"