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SUNION

Syntax​

SUNION key [key ...]

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

ACL categories: @read, @set, @slow

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​

Array reply: list with members of the resulting set.

Examples​

dragonfly> SADD key1 "a"
(integer) 1
dragonfly> SADD key1 "b"
(integer) 1
dragonfly> SADD key1 "c"
(integer) 1
dragonfly> SADD key2 "c"
(integer) 1
dragonfly> SADD key2 "d"
(integer) 1
dragonfly> SADD key2 "e"
(integer) 1
dragonfly> SUNION key1 key2
1) "a"
2) "c"
3) "b"
4) "d"
5) "e"