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https://issues.apache.org/jira/browse/FLINK-40160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Nuyanzin resolved FLINK-40160.
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Fix Version/s: 2.4.0
Resolution: Fixed
> Casting 'NaN' to Float or Double throws CompileException
> --------------------------------------------------------
>
> Key: FLINK-40160
> URL: https://issues.apache.org/jira/browse/FLINK-40160
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Reporter: Ramin Gharib
> Assignee: Ramin Gharib
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.4.0
>
>
> Casting {{NaN}} (Not A Number) to float or double is broken. When calling
> {code:java}
> SELECT CAST('NaN' AS FLOAT){code}
> You will get
> {code:java}
> Caused by: org.codehaus.commons.compiler.CompileException Create breakpoint :
> Line 45, Column 36: Expression "NaNf" is not an rvalue
> at org.codehaus.janino.UnitCompiler.compileError(UnitCompiler.java:13228)
> at
> org.codehaus.janino.UnitCompiler.toRvalue0rCompileException(UnitCompiler.java:8073)
> at org.codehaus.janino.UnitCompiler.getConstantValue2(UnitCompiler.java:6053)
> at org.codehaus.janino.UnitCompiler.access$11000(UnitCompiler.java:240)
> at
> org.codehaus.janino.UnitCompiler$19$1.visitAmbiguousName(UnitCompiler.java:6004)
> at org.codehaus.janino.Java$AmbiguousName.accept(Java.java:4603)
> at org.codehaus.janino.UnitCompiler$19.visitLvalve(UnitCompiler.java:6003)
> at org.codehaus.janino.Java$Lvalue.accept(Java.java:4528) {code}
> Same issue for {{SELECT CAST('NaN' AS DOUBLE).}}
> The fix should be done in the
> [CodeGenUtils|https://github.com/raminqaf/flink/blob/a417739e30e1fa2f40554619c9b35543f2b4d69e/flink-table/flink-table-planner/src/main/scala/org/apache/flink/table/planner/codegen/CodeGenUtils.scala#L232-L243].
> There we don't respect the Float or Double NaN.
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