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From "Jark Wu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-12269) Support Temporal Table Join in blink planner
Date Sat, 20 Apr 2019 03:23:00 GMT
Jark Wu created FLINK-12269:
-------------------------------

             Summary: Support Temporal Table Join in blink planner
                 Key: FLINK-12269
                 URL: https://issues.apache.org/jira/browse/FLINK-12269
             Project: Flink
          Issue Type: New Feature
          Components: Table SQL / Planner
            Reporter: Jark Wu


Support translate following "FOR SYSTEM_TIME AS OF" query into {{StreamExecTemporalTableJoin}}.

{code:sql}
SELECT
  o.amout, o.currency, r.rate, o.amount * r.rate
FROM
  Orders AS o
  JOIN LatestRates FOR SYSTEM_TIME AS OF o.proctime AS r
  ON r.currency = o.currency
{code}

This is an extension to current temporal join (FLINK-9738) using a standard syntax introduced
in Calcite 1.19.



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