SUNION
Return the union of the given sets (cross-shard gather).
SUNION key [key ...]Complexity
O(sum of the source cardinalities)
Complexity and compatibility are read out of kevy's implementation, not copied from Redis's reference. Several genuinely differ.
Redis compatibility
Compatible
Behaves as Redis does.
See also
SADDSCARDSDIFFSDIFFSTORESINTERSINTERSTORESISMEMBERSMEMBERSSPOPSRANDMEMBERSREMSSCANSUNIONSTORE