Ingo Bürk created FLINK-24586:
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Summary: 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
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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