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https://issues.apache.org/jira/browse/CALCITE-5039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17513324#comment-17513324
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Xurenhe commented on CALCITE-5039:
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I guess you're using the type of bigint to store time data.

These data will miss some datetime's info, in terms of data's integrity.

PS: bigint's data may not be compared with datetime's string.

> View:Timestamp cannot query Data:Long in GMT+8 TimeZone Env
> -----------------------------------------------------------
>
>                 Key: CALCITE-5039
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5039
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core, jdbc-driver
>    Affects Versions: 1.29.0, 1.30.0
>            Reporter: itxiangkui
>            Priority: Major
>              Labels: TimeZone, Timestamp
>         Attachments: image-2022-03-15-17-07-39-917.png
>
>
> When I have a row like :
> |ts:TimeStamp|channel:String|pv:Long|
> |1647187200000|ios|10|
>  
> while 1647187200000 is a timestamp in TimeZone of "GMT+8",the datetime is 
> "2022-03-14 00:00:00"
> but you can not query the data using a sql like :
> ```sql
> select * from table where ts='2022-03-14 00:00:00';
> select * from table where ts<'2022-03-14 00:00:01' and  ts>'2022-03-13 
> 23:59:59'  and channel='ios';
> ```
> it is like the jdbc-fether will filter the data when match the 
> timestampString,while the timestamp String looks like '2022-03-13 16:00:00' 
> or '2022-03-14 08:00:00'
>  
>  



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