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https://issues.apache.org/jira/browse/FLINK-4554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15726119#comment-15726119
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ASF GitHub Bot commented on FLINK-4554:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/2919#discussion_r91114685
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/codegen/CodeGenUtils.scala
---
@@ -189,6 +188,16 @@ object CodeGenUtils {
throw new CodeGenException("Interval expression type expected.")
}
+ def requireArray(genExpr: GeneratedExpression) =
+ if (!TypeCheckUtils.isArray(genExpr.resultType)) {
+ throw new CodeGenException("Array expression type expected.")
+ }
+
+ def requireInteger(genExpr: GeneratedExpression) =
+ if (!TypeCheckUtils.isInteger(genExpr.resultType)) {
+ throw new CodeGenException("Array expression type expected.")
--- End diff --
`Array` -> `Integer`
> Add support for array types
> ---------------------------
>
> Key: FLINK-4554
> URL: https://issues.apache.org/jira/browse/FLINK-4554
> Project: Flink
> Issue Type: New Feature
> Components: Table API & SQL
> Reporter: Timo Walther
> Assignee: Timo Walther
>
> Support creating arrays:
> {code}ARRAY[1, 2, 3]{code}
> Access array values:
> {code}myArray[3]{code}
> And operations like:
> {{UNNEST, UNNEST WITH ORDINALITY, CARDINALITY}}
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