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Posted to issues@flink.apache.org by "Kurt Young (Jira)" <ji...@apache.org> on 2019/12/04 04:20:00 UTC

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

     [ https://issues.apache.org/jira/browse/FLINK-14764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kurt Young updated FLINK-14764:
-------------------------------
    Summary: The final Explicit conversion matrix we should support in our planner  (was: The final Explicit/Implicit conversion matrix we should support in our planner)

> The final Explicit 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
>            Priority: Blocker
>             Fix For: 1.10.0
>
>         Attachments: SQL_2011_CAST_Matrix.png
>
>
> 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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