[jira] (FLINK-24586) SQL functions should return STRING instead of VARCHAR(2000)

["Timo Walther (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-24586 ]


    Timo Walther deleted comment on FLINK-24586:
    --------------------------------------

was (Author: twalthr):
This is indeed a bug. [~nicholasjiang] do you have capacity to fix this missing piece?

> SQL functions should return STRING instead of VARCHAR(2000)
> -----------------------------------------------------------
>
>                 Key: FLINK-24586
>                 URL: https://issues.apache.org/jira/browse/FLINK-24586
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table SQL / API
>            Reporter: Ingo Bürk
>            Assignee: Nicholas Jiang
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.15.0
>
>
> There are some SQL functions which currently return VARCHAR(2000). With more strict CAST behavior from FLINK-24413, this could become an issue.
> The following functions return VARCHAR(2000) and should be changed to return STRING instead:
> * JSON_VALUE
> * JSON_QUERY
> * JSON_OBJECT
> * JSON_ARRAY
> There are also some more functions which should be evaluated:
> * CHR
> * REVERSE
> * SPLIT_INDEX
> * PARSE_URL
> * FROM_UNIXTIME
> * DECODE



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