sunionstore 命令
Sunionstore 命令将给定集合的并集存储在指定的集合 destination 中。
语法
SUNIONSTORE DESTINATION KEY KEY1..KEYN
返回值
结果集中的元素数量。
实例
redis> SADD myset1 "hello" (integer) 1 redis> SADD myset1 "world" (integer) 1 redis> SADD myset1 "bar" (integer) 1 redis> SADD myset2 "hello" (integer) 1 redis> SADD myset2 "bar" (integer) 1 redis> SUNIONSTORE myset myset1 myset2 (integer) 1 redis> SMEMBERS myset 1) "bar" 2) "world" 3) "hello" 4) "foo"