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Posted to issues@calcite.apache.org by "xiong duan (Jira)" <ji...@apache.org> on 2022/06/06 05:41:00 UTC

[jira] [Updated] (CALCITE-5181) SUM aggregate function return wong result

     [ https://issues.apache.org/jira/browse/CALCITE-5181?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

xiong duan updated CALCITE-5181:
--------------------------------
    Summary: SUM aggregate function return wong result  (was: Sum aggregate function return wong result)

> SUM aggregate function return wong result
> -----------------------------------------
>
>                 Key: CALCITE-5181
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5181
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.30.0
>            Reporter: xiong duan
>            Priority: Major
>
> To reproduce(dummy.iq):
> {code:java}
> !use scott
> !set outputformat mysql
> SELECT sum(empno) from "scott".emp; {code}
> Should return 108172, but return -22900.
> This is because RelDataTypeSystemImpl deriveSumType return a wrong datatype. We presume when the parameter is smllInt, the return datatype stay same as the parameter. So the result out of range.



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