sunionstore.3valkey - Man Page

SUNIONSTORE destination key [key...]

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

If destination already exists, it is overwritten.

valkey-protocol(7) Integer reply: the number of elements in the resulting set.

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

@set @slow @write

• Available since: 1.0.0

127.0.0.1:6379> SADD key1 "a"
(integer) 1
127.0.0.1:6379> SADD key1 "b"
(integer) 1
127.0.0.1:6379> SADD key1 "c"
(integer) 1
127.0.0.1:6379> SADD key2 "c"
(integer) 1
127.0.0.1:6379> SADD key2 "d"
(integer) 1
127.0.0.1:6379> SADD key2 "e"
(integer) 1
127.0.0.1:6379> SUNIONSTORE key key1 key2
(integer) 5
127.0.0.1:6379> SMEMBERS key
1) "a"
2) "b"
3) "c"
4) "d"
5) "e"

sadd(3valkey), scard(3valkey), sdiff(3valkey), sdiffstore(3valkey), sinter(3valkey), sintercard(3valkey), sinterstore(3valkey), sismember(3valkey), smembers(3valkey), smismember(3valkey), smove(3valkey), spop(3valkey), srandmember(3valkey), srem(3valkey), sscan(3valkey), sunion(3valkey)