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Posted to issues@flink.apache.org by "godfrey he (Jira)" <ji...@apache.org> on 2021/10/31 13:47:00 UTC

[jira] [Closed] (FLINK-24492) incorrect implicit type conversion between numeric and (var)char

     [ https://issues.apache.org/jira/browse/FLINK-24492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

godfrey he closed FLINK-24492.
------------------------------
    Resolution: Fixed

Fixed in 1.15.0: 25dc6eacd38bd7a70883fc8e54f0bec8dc5861c0
Fixed in 1.14.1: 5fcc4a10eaabceeb131ddeb29379bd1c73b1303a
Fixed in 1.13.4: 5cbaa28d688e5e3f75aa28d5b69110497415df4b

> incorrect implicit type conversion between numeric and (var)char
> ----------------------------------------------------------------
>
>                 Key: FLINK-24492
>                 URL: https://issues.apache.org/jira/browse/FLINK-24492
>             Project: Flink
>          Issue Type: Bug
>          Components: Table SQL / Planner
>            Reporter: xuyang
>            Assignee: xuyang
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 1.15.0, 1.14.1, 1.13.4
>
>
> The result of the sql "select 1 = '1'" is false. This is caused by the CodeGen. CodeGen  incorrectly transform this "=" to "BinaryStringData.equals (int 1)". And "<>" has the same wrong result.
> In my opinion, "=" should have the same behavior with ">" and "<", which have the correct results. So before calcite solves this bug or flink supports this kind of implicit type conversion, we'd better temporarily forbidding this implicit type conversion in "=" and "<>".



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