Symmetric hash join

The symmetric hash join is a special type of hash join designed for data streams.[1][2]

Algorithm
  • For each input create a hash table
  • For each new record hash and insert into inputs hash table
    • Test if input is equal to a pre defined set of other inputs
      • If so then output the records

See also

References
  1. "Issues in Data Stream Management" (PDF).
  2. "University of Waterloo - Database Systems Implementation" (PDF).
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