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.

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.

Examples

redis> SADD key1 "a"
"1743876498041-0"
redis> SADD key1 "b"
"1743876498041-1"
redis> SADD key1 "c"
"1743876498042-0"
redis> SADD key2 "c"
"1743876498042-1"
redis> SADD key2 "d"
"1743876498042-2"
redis> SADD key2 "e"
(integer) 5
redis> SUNION key1 key2
1) 1) "1743876498041-0"
   2) 1) "name"
      2) "Virginia"
      3) "surname"
      4) "Woolf"
2) 1) "1743876498041-1"
   2) 1) "name"
      2) "Jane"
      3) "surname"
      4) "Austen"

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