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Posted to issues@calcite.apache.org by "Julian Hyde (Jira)" <ji...@apache.org> on 2020/03/02 21:16:00 UTC

[jira] [Commented] (CALCITE-3412) FLOOR(timestamp TO WEEK) gives wrong result

    [ https://issues.apache.org/jira/browse/CALCITE-3412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17049647#comment-17049647 ] 

Julian Hyde commented on CALCITE-3412:
--------------------------------------

[~danny0405], Did you decide not to include this in 1.22, or did you miss it?

> FLOOR(timestamp TO WEEK) gives wrong result
> -------------------------------------------
>
>                 Key: CALCITE-3412
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3412
>             Project: Calcite
>          Issue Type: Bug
>          Components: avatica, core
>            Reporter: huaicui
>            Assignee: Julian Hyde
>            Priority: Major
>             Fix For: avatica-1.17.0, 1.23.0
>
>         Attachments: image-2019-10-15-13-33-34-896.png
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> Floor timestamp to week exist error:
> The start day of the week is not Sunday or Monday, calcite use Thursday to split a week.
> Example:
> sql: select FLOOR(CAST('2017-01-28' AS TIMESTAMP) TO WEEK);
> Response:
> 2017-01-26 00:00:00.0
>  
> 2017-01-26 is Thursday that is not our expect result. As result, 2017-01-22 is the first day that we expect.
>  
>  



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