[jira] [Updated] (FLINK-23313) Reintroduce temporal table function documentation

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-23313?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-23313:
-----------------------------------
    Labels: pull-request-available  (was: )

> Reintroduce temporal table function documentation
> -------------------------------------------------
>
>                 Key: FLINK-23313
>                 URL: https://issues.apache.org/jira/browse/FLINK-23313
>             Project: Flink
>          Issue Type: Bug
>          Components: Documentation, Table SQL / API
>            Reporter: Timo Walther
>            Assignee: Leonard Xu
>            Priority: Critical
>              Labels: pull-request-available
>
> FLIP-132 introduced the new {{FOR SYSTEM_TIME AS OF}} and dropped the main documentation for temporal table function. This causes a lot of confusion for users.
> First, because processing time joins are not supported yet.
> Second, because a primary key might not always be present in the current pipeline when using Table API.
> We have not deprecated `createTemporalTableFunction` and the documentation in https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/dev/table/tableapi/#join-with-temporal-table is not enough.



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