SDIFFSTORE destination key [key ...]

Available since: 1.0.0

Time complexity: O(N) where N is the total number of elements in all given sets.

ACL categories: @write @set @slow

This command is equal to SDIFF, but instead of returning the resulting set, it is stored in destination.

If destination already exists, it is overwritten.

Return

Integer reply: the number of elements in the resulting set.

Examples

redis:6379> SADD key1 "a"
Failed to fetch
redis:6379> SADD key1 "b"
Failed to fetch
redis:6379> SADD key1 "c"
Failed to fetch
redis:6379> SADD key2 "c"
Failed to fetch
redis:6379> SADD key2 "d"
Failed to fetch
redis:6379> SADD key2 "e"
Failed to fetch
redis:6379> SDIFFSTORE key key1 key2
Failed to fetch
redis:6379> SMEMBERS key
Failed to fetch

redis:6379>

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