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https://issues.apache.org/jira/browse/KYLIN-5747?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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pengfei.zhan resolved KYLIN-5747.
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Resolution: Duplicate
> Calcite constant folding, adding strings to numbers, results not as expected
> when multiple plus signs are used together
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: KYLIN-5747
> URL: https://issues.apache.org/jira/browse/KYLIN-5747
> Project: Kylin
> Issue Type: Bug
> Affects Versions: 5.0-beta
> Reporter: zhong.zhu
> Assignee: zhong.zhu
> Priority: Critical
> Fix For: 5.0.0
>
>
> Phenomenon:
> When more than one plus sign is used in a row and the parameters on both
> sides of the plus sign are constants, the result is not as expected
> '1' + 3 + 3 → 7 (correct)
> '1' + 3 + '3' → 4.03 (wrong result)
> '1' + '3' + 'a' → error
> When multiple plus signs are used in a row, and the arguments on both sides
> of the plus sign are constants, and the first plus sign results in null, the
> use of plus signs in a row is not supported.
> e.g. 'q' + 1 + 1 -> error
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