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https://issues.apache.org/jira/browse/FLINK-9332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16471729#comment-16471729
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ASF GitHub Bot commented on FLINK-9332:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/5988#discussion_r187568481
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/calls/CallGenerator.scala
---
@@ -64,17 +65,28 @@ object CallGenerator {
val (auxiliaryStmt, result) = call(operands.map(_.resultTerm))
+ val nullTermCode = if (
+ nullCheck &&
+ isReference(returnType) &&
+ !TypeCheckUtils.isTemporal(returnType)) {
--- End diff --
Why do you exclude temporal types here?
> Fix Codegen error of CallGenerator
> ------------------------------------
>
> Key: FLINK-9332
> URL: https://issues.apache.org/jira/browse/FLINK-9332
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Reporter: Ruidong Li
> Assignee: Ruidong Li
> Priority: Major
>
> function call may return null, but nullTerm did not handle it correctly.
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