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Posted to issues@flink.apache.org by "Zhenghua Gao (Jira)" <ji...@apache.org> on 2019/11/14 04:31:00 UTC

[jira] [Created] (FLINK-14764) The final Explicit/Implicit conversion matrix we should support in our planner

Zhenghua Gao created FLINK-14764:
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             Summary: The final Explicit/Implicit conversion matrix we should support in our planner
                 Key: FLINK-14764
                 URL: https://issues.apache.org/jira/browse/FLINK-14764
             Project: Flink
          Issue Type: Improvement
          Components: Table SQL / Legacy Planner, Table SQL / Planner
    Affects Versions: 1.10.0
            Reporter: Zhenghua Gao
             Fix For: 1.10.0


The SQL standard defines the cast specification with an explicit conversion matrix (SQL 2011 Part 2 Section 6.13 Syntax Rules 6)). But neither Legacy planner nor blink planner would follow that. IMO we should determine a final Explicit/Implicit conversion matrix before 1.10 (at least in blink planner).

 



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