[ 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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