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Caizhi Weng commented on FLINK-24586: ------------------------------------- Hi [~airblader] [~liliwei]. I see that {{JSON_VALUE}} is in the list, however in {{JsonFunctionsITcase#jsonValueSpec}} the expected return type for {{JSON_VALUE}} is still varchar(2000). Is this intended or shall we also change this? > 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 -- This message was sent by Atlassian Jira (v8.20.1#820001)