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Docs > Redis Commands > Z1 > Zdiffstore
Computes the difference between the first and all successive input sorted sets
and stores the result in destination
. The total number of input keys is
specified by numkeys
.
Keys that do not exist are considered to be empty sets.
If destination
already exists, it is overwritten.
@return
@integer-reply: the number of elements in the resulting sorted set at
destination
.
@examples
ZADD zset1 1 "one"
ZADD zset1 2 "two"
ZADD zset1 3 "three"
ZADD zset2 1 "one"
ZADD zset2 2 "two"
ZDIFFSTORE out 2 zset1 zset2
ZRANGE out 0 -1 WITHSCORES