W3cubDocs

/Redis

SUNION

SUNION key [key ...]

Available since 1.0.0.

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

Returns the members of the set resulting from the union of all the given sets.

For example:

key1 = {a,b,c,d}
key2 = {c}
key3 = {a,c,e}
SUNION key1 key2 key3 = {a,b,c,d,e}

Keys that do not exist are considered to be empty sets.

Return value

Array reply: list with members of 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> SUNION key1 key2

1) "a"
2) "c"
3) "e"
4) "b"
5) "d"

© 2009–2020 Salvatore Sanfilippo
Licensed under the Creative Commons Attribution-ShareAlike License 4.0.
https://redis.io/commands/sunion