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https://issues.apache.org/jira/browse/FLINK-31300?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Nuyanzin resolved FLINK-31300.
-------------------------------------
Fix Version/s: 1.18.0
Resolution: Fixed
> TRY_CAST fails for constructed types
> ------------------------------------
>
> Key: FLINK-31300
> URL: https://issues.apache.org/jira/browse/FLINK-31300
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.17.0, 1.16.1
> Reporter: Sergey Nuyanzin
> Assignee: Sergey Nuyanzin
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.18.0
>
>
> In case of problems with cast it is expected to return {{null}}
> however for arrays, maps it fails
> example of failing queries
> {code:sql}
> select try_cast(array['a'] as array<int>);
> select try_cast(map['a', '1'] as map<int, int>);
> {code}
> {noformat}
> [ERROR] Could not execute SQL statement. Reason:
> java.lang.NumberFormatException: For input string: 'a'. Invalid character
> found.
> at
> org.apache.flink.table.data.binary.BinaryStringDataUtil.numberFormatExceptionFor(BinaryStringDataUtil.java:585)
> at
> org.apache.flink.table.data.binary.BinaryStringDataUtil.toInt(BinaryStringDataUtil.java:518)
> at StreamExecCalc$15.processElement(Unknown Source)
> at
> org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.pushToOperator(CopyingChainingOutput.java:82)
> at
> org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.collect(CopyingChainingOutput.java:57)
> at
> org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.collect(CopyingChainingOutput.java:29)
> at
> org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:56)
> at
> org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:29)
> at
> org.apache.flink.streaming.api.operators.StreamSourceContexts$ManualWatermarkContext.processAndCollect(StreamSourceContexts.java:418)
> at
> org.apache.flink.streaming.api.operators.StreamSourceContexts$WatermarkContext.collect(StreamSourceContexts.java:513)
> at
> org.apache.flink.streaming.api.operators.StreamSourceContexts$SwitchingOnClose.collect(StreamSourceContexts.java:103)
> at
> org.apache.flink.streaming.api.functions.source.InputFormatSourceFunction.run(InputFormatSourceFunction.java:92)
> at
> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:110)
> at
> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:67)
> at
> org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.run(SourceStreamTask.java:333)
> {noformat}
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