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Posted to issues@flink.apache.org by "xuyang (Jira)" <ji...@apache.org> on 2022/04/14 08:19:00 UTC
[jira] [Updated] (FLINK-27247) CAST is not compatible with legacy behavior
[ https://issues.apache.org/jira/browse/FLINK-27247?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
xuyang updated FLINK-27247:
---------------------------
Summary: CAST is not compatible with legacy behavior (was: when add numeric casting rules, some logics are lost)
> CAST is not compatible with legacy behavior
> -------------------------------------------
>
> Key: FLINK-27247
> URL: https://issues.apache.org/jira/browse/FLINK-27247
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Reporter: xuyang
> Priority: Minor
>
> Add the following test cases in ScalarFunctionsTest:
> {code:java}
> // code placeholder
> @Test
> def test(): Unit ={
> testSqlApi("rand(1) + 1","")
> } {code}
> it will throw the following exception:
> {code:java}
> // code placeholder
> org.apache.flink.table.planner.codegen.CodeGenException: Unsupported casting from DOUBLE to DOUBLE NOT NULL.
> at org.apache.flink.table.planner.codegen.calls.ScalarOperatorGens$.numericCasting(ScalarOperatorGens.scala:1734)
> at org.apache.flink.table.planner.codegen.calls.ScalarOperatorGens$.generateBinaryArithmeticOperator(ScalarOperatorGens.scala:85)
> at org.apache.flink.table.planner.codegen.ExprCodeGenerator.generateCallExpression(ExprCodeGenerator.scala:507)
> at org.apache.flink.table.planner.codegen.ExprCodeGenerator.visitCall(ExprCodeGenerator.scala:481)
> at org.apache.flink.table.planner.codegen.ExprCodeGenerator.visitCall(ExprCodeGenerator.scala:57)
> at org.apache.calcite.rex.RexCall.accept(RexCall.java:174)
> at org.apache.flink.table.planner.codegen.ExprCodeGenerator.$anonfun$visitCall$1(ExprCodeGenerator.scala:478)
> at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:233)
> at scala.collection.mutable.ResizableArray.foreach(ResizableArray.scala:58)
> at scala.collection.mutable.ResizableArray.foreach$(ResizableArray.scala:51)
> at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
> at scala.collection.TraversableLike.map(TraversableLike.scala:233)
> at scala.collection.TraversableLike.map$(TraversableLike.scala:226)
> at scala.collection.AbstractTraversable.map(Traversable.scala:104)
> at org.apache.flink.table.planner.codegen.ExprCodeGenerator.visitCall(ExprCodeGenerator.scala:469)
> ... {code}
> This is because in ScalarOperatorGens#numericCasting, FLINK-24779 lost the logic that in some cases there is no need to casting the left and right type.
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