7、sinterstore
返回所有给定key的交集，并将结果存为另一个key
redis 127.0.0.1:6379> smembers myset2
1) "three"
2) "two"
redis 127.0.0.1:6379> smembers myset3
1) "two"
2) "one"
redis 127.0.0.1:6379> sinterstore myset5 myset2 myset3
(integer) 1
redis 127.0.0.1:6379> smembers myset5
1) "two"
redis 127.0.0.1:6379>
1) "three"
2) "two"
redis 127.0.0.1:6379> smembers myset3
1) "two"
2) "one"
redis 127.0.0.1:6379> sinterstore myset5 myset2 myset3
(integer) 1
redis 127.0.0.1:6379> smembers myset5
1) "two"
redis 127.0.0.1:6379>
通过本例的结果可以看出, myset2和myset3的交集被保存到myset5中了
8、sunion
返回所有给定key的并集
redis 127.0.0.1:6379> smembers myset2
1) "three"
2) "two"
redis 127.0.0.1:6379> smembers myset3
1) "two"
2) "one"
redis 127.0.0.1:6379> sunion myset2 myset3
1) "three"
2) "one"
3) "two"
redis 127.0.0.1:6379>
1) "three"
2) "two"
redis 127.0.0.1:6379> smembers myset3
1) "two"
2) "one"
redis 127.0.0.1:6379> sunion myset2 myset3
1) "three"
2) "one"
3) "two"
redis 127.0.0.1:6379>
通过本例的结果可以看出, myset2和myset3的并集被查出来了
9、sunionstore
返回所有给定key的并集，并将结果存为另一个key
redis 127.0.0.1:6379> smembers myset2
1) "three"
2) "two"
redis 127.0.0.1:6379> smembers myset3
1) "two"
2) "one"
redis 127.0.0.1:6379> sunionstore myset6 myset2 myset3
(integer) 3
redis 127.0.0.1:6379> smembers myset6
1) "three"
2) "one"
3) "two"
redis 127.0.0.1:6379>
1) "three"
2) "two"
redis 127.0.0.1:6379> smembers myset3
1) "two"
2) "one"
redis 127.0.0.1:6379> sunionstore myset6 myset2 myset3
(integer) 3
redis 127.0.0.1:6379> smembers myset6
1) "three"
2) "one"
3) "two"
redis 127.0.0.1:6379>
通过本例的结果可以看出, myset2和myset3的并集被保存到myset6中了
10、smove
从第一个key对应的set中移除member并添加到第二个对应set中
redis 127.0.0.1:6379> smembers myset2
1) "three"
2) "two"
redis 127.0.0.1:6379> smembers myset3
1) "two"
2) "one"
redis 127.0.0.1:6379> smove myset2 myset7 three
(integer) 1
redis 127.0.0.1:6379> smembers myset7
1) "three"
redis 127.0.0.1:6379>
1) "three"
2) "two"
redis 127.0.0.1:6379> smembers myset3
1) "two"
2) "one"
redis 127.0.0.1:6379> smove myset2 myset7 three
(integer) 1
redis 127.0.0.1:6379> smembers myset7
1) "three"
redis 127.0.0.1:6379>
通过本例可以看到，myset2的three被移到myset7中了
11、scard
返回名称为key的set的元素个数
redis 127.0.0.1:6379> scard myset2
(integer) 1
redis 127.0.0.1:6379>
(integer) 1
redis 127.0.0.1:6379>
通过本例可以看到，myset2的成员数量为1
12、sismember
测试member是否是名称为key的set的元素
redis 127.0.0.1:6379> smembers myset2
1) "two"
redis 127.0.0.1:6379> sismember myset2 two
(integer) 1
redis 127.0.0.1:6379> sismember myset2 one
(integer) 0
redis 127.0.0.1:6379>
1) "two"
redis 127.0.0.1:6379> sismember myset2 two
(integer) 1
redis 127.0.0.1:6379> sismember myset2 one
(integer) 0
redis 127.0.0.1:6379>
通过本例可以看到，two是myset2的成员，而one不是。
13、srandmember
随机返回名称为key的set的一个元素，但是不删除元素
redis 127.0.0.1:6379> smembers myset3
1) "two"
2) "one"
redis 127.0.0.1:6379> srandmember myset3
"two"
redis 127.0.0.1:6379> srandmember myset3
"one"
redis 127.0.0.1:6379>
1) "two"
2) "one"
redis 127.0.0.1:6379> srandmember myset3
"two"
redis 127.0.0.1:6379> srandmember myset3
"one"
redis 127.0.0.1:6379>
