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Posted to dev@calcite.apache.org by "Rui Wang (Jira)" <ji...@apache.org> on 2020/07/16 02:54:00 UTC

[jira] [Created] (CALCITE-4125) Stream Join

Rui Wang created CALCITE-4125:
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             Summary: Stream Join
                 Key: CALCITE-4125
                 URL: https://issues.apache.org/jira/browse/CALCITE-4125
             Project: Calcite
          Issue Type: Sub-task
            Reporter: Rui Wang


Right now stream JOIN is supported in syntax (e.g. in planner), however, there are more areas needs a enhancement:
1. Does windowing strategy in JOIN  have a constraint? For example, is a TUMBLE stream allowed to join a HOP stream?
2. If there is any constraints on windowing strategy in JOIN, how will that affect JOIN ordering?
3. How to optimize stream join stream or stream join table, which, by nature, should be different from table join table?



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