[jira] [Comment Edited] (CALCITE-5512) why not support FOR SYSTEM_VERSION AS OF

["Julian Hyde (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-5512?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17684007#comment-17684007 ] 

Julian Hyde edited comment on CALCITE-5512 at 2/3/23 7:46 PM:
--------------------------------------------------------------

{quote}
why not support FOR SYSTEM_VERSION AS OF
{quote}

Because no one has contributed it.

{{FOR SYSTEM_VERSION AS OF}} is in the SQL standard. Reading the standard, proposing a feature, implementing it and testing it is a lot work.

I don't think you intended it this way, but your phrasing "why not support FOR SYSTEM_VERSION AS OF" comes over as a complaint, and that is insulting to the many people who maintain Calcite as volunteers. If you have a question, ask it on the dev list. If there is a missing feature, propose it as Jira feature request, but be prepared to do the work to write at least a good specification.


was (Author: julianhyde):
Because no one has contributed it.

> why not support FOR SYSTEM_VERSION AS OF 
> -----------------------------------------
>
>                 Key: CALCITE-5512
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5512
>             Project: Calcite
>          Issue Type: Wish
>          Components: core
>            Reporter: YangFei
>            Priority: Major
>
> hive support FOR SYSTEM_VERSION AS OF/FOR SYSTEM_TIME AS OF, why calcite Parser.jj not support FOR SYSTEM_VERSION AS OF



--
This message was sent by Atlassian Jira
(v8.20.10#820010)