SUNIONSTORE
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.
Return value
Integer reply: the number of elements in the resulting set.
Examples
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>
SUNIONSTORE key key1 key2
(integer) 5
redis>
SMEMBERS key
1) "a" 2) "c" 3) "b" 4) "e" 5) "d"
© 2009–2020 Salvatore Sanfilippo
Licensed under the Creative Commons Attribution-ShareAlike License 4.0.
https://redis.io/commands/sunionstore