SUNIONSTORE

SUNIONSTORE destination key [key ...]

Available since:

1.0.0

Time complexity:

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

ACL categories:

@write, @set, @slow,

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.

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) "b"
3) "c"
4) "d"
5) "e"

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