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https://issues.apache.org/jira/browse/KYLIN-5756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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pengfei.zhan resolved KYLIN-5756.
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Resolution: Fixed
> Concat string and number with '+' gives unexpected result
> ---------------------------------------------------------
>
> Key: KYLIN-5756
> URL: https://issues.apache.org/jira/browse/KYLIN-5756
> Project: Kylin
> Issue Type: Improvement
> Components: Query Engine
> Affects Versions: 5.0-beta
> Reporter: pengfei.zhan
> Assignee: pengfei.zhan
> Priority: Major
> Fix For: 5.0-beta
>
>
> Concat string and number gives unexpected result.
> For example:
> 1. concat constant with plus operator, gives unexpected result
> {code:java}
> 1' + 3 + 3 // 7 (correct)
> '1' + 3 + '3' // 4.03 (wrong result)
> '1' + '3' + 'a' // error
> {code}
> 2. concat string and number, the first '+' produces null
> {code:java}
> 'q' + 1 + 1 // error
> {code}
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