SINTERSTORE destination key [key ...]

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

If destination already exists, it is overwritten.

*返回值

整数: the number of elements in the resulting set.

*例子

redis>  SADD key1 "a"
(integer) 1
redis>  SADD key1 "b"
(integer) 1
redis>  SADD key1 "c"
(integer) 1
redis>  SADD key2 "c"
(integer) 1
redis>  SADD key2 "d"
(integer) 1
redis>  SADD key2 "e"
(integer) 1
redis>  SINTERSTORE key key1 key2
(integer) 1
redis>  SMEMBERS key
1) "c"
redis>