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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.

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

Return value

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

Examples

redis> ZADD zset1 1 "one" (integer) 1 redis> ZADD zset1 2 "two" (integer) 1 redis> ZADD zset1 3 "three" (integer) 1 redis> ZADD zset2 1 "one" (integer) 1 redis> ZADD zset2 2 "two" (integer) 1 redis> ZDIFF 2 zset1 zset2 1) "three" redis> ZDIFF 2 zset1 zset2 WITHSCORES

1) "three"
2) "3"

© 2009–2020 Salvatore Sanfilippo
Licensed under the Creative Commons Attribution-ShareAlike License 4.0.
https://redis.io/commands/zdiff