Sergey Nuyanzin created FLINK-31300:
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Summary: 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: 1.16.1, 1.17.0
Reporter: Sergey Nuyanzin
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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