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 predefined set of other inputs.
      • If so, 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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