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https://issues.apache.org/jira/browse/CALCITE-4474?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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wangjie updated CALCITE-4474:
-----------------------------
    Description: 
the SqlSimpleParser#simplifySql function can filter comments

but when `--` follow by variable, this comment will not be filter. In fact, it 
should be filtered

you can see 
[reproduce-demo](https://github.com/wangjie-fourth/calcite-reproduce)

  was:
the SqlSimpleParser#simplifySql function can filter comments

but when `--` follow by variable, this comment will not be filter. In fact, it 
should be filtered


> SqlSimpleParser inner Tokenizer ignore comment in some special case
> -------------------------------------------------------------------
>
>                 Key: CALCITE-4474
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4474
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.26.0
>            Reporter: wangjie
>            Priority: Minor
>             Fix For: 1.26.0
>
>
> the SqlSimpleParser#simplifySql function can filter comments
> but when `--` follow by variable, this comment will not be filter. In fact, 
> it should be filtered
> you can see 
> [reproduce-demo](https://github.com/wangjie-fourth/calcite-reproduce)



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