[jira] [Commented] (IGNITE-23684) Calcite engine. Lack of date formatting functions

["Ignite TC Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-23684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17901854#comment-17901854 ] 

Ignite TC Bot commented on IGNITE-23684:
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> Calcite engine. Lack of date formatting functions
> -------------------------------------------------
>
>                 Key: IGNITE-23684
>                 URL: https://issues.apache.org/jira/browse/IGNITE-23684
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Aleksey Plekhanov
>            Assignee: Aleksey Plekhanov
>            Priority: Major
>              Labels: calcite, ise
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> In the Calcite SQL engine we don't have any date/time/number formating function, and date/time/number parsing functions with custom format.
> H2 engine has TO_DATE, TO_CHAR, TO_NUMBER (Oracle compatible) and own FORMATDATETIME, PARSEDATETIME.
> Apache Calcite has TO_DATE and TO_CHAR functions in internal library, but not exposed to our SQL engine now. Also it supports CAST(... AS DATE FORMAT ...), but we also don't support this syntax. 
> Both TO_DATE and CAST-FORMAT are not part of SQL standard, but, perhaps it's better to implement TO_DATE (also TO_CHAR, TO_NUMBER) for compatibility with H2 engine.    



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