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+ +SunionCommand: Contents
  SUNION _key1_ _key2_ ... _keyN_
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SunionCommand

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+ #sidebar SetCommandsSidebar

SUNION _key1_ _key2_ ... _keyN_

+Time complexity O(N) where N is the total number of elements in all the provided sets
Return the members of a set resulting from the union of all thesets hold at the specified keys. Like in LRANGE the result is sent tothe client as a multi-bulk reply (see the protocol specification formore information). If just a single key is specified, then this commandproduces the same result as SMEMBERS.
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Non existing keys are considered like empty sets.
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Return value

Multi bulk reply, specifically the list of common elements. + +
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