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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2020/07/10 12:28:10 UTC

[GitHub] [flink] twalthr commented on a change in pull request #12862: [FLINK-18528][table] Update UNNEST to new type system

twalthr commented on a change in pull request #12862:
URL: https://github.com/apache/flink/pull/12862#discussion_r452811509



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File path: flink-table/flink-table-planner-blink/src/test/resources/org/apache/flink/table/planner/plan/batch/sql/UnnestTest.xml
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@@ -34,7 +34,7 @@ LogicalProject(a=[$0], s=[$3])
     <Resource name="planAfter">
       <![CDATA[
 Calc(select=[a, f0 AS s])
-+- Correlate(invocation=[explode($cor0.c)], correlate=[table(explode($cor0.c))], select=[a,b,c,f0], rowType=[RecordType(INTEGER a, BIGINT b, VARCHAR(2147483647) ARRAY c, VARCHAR(2147483647) f0)], joinType=[INNER])

Review comment:
       I don't know why we called it `explode` in the past. There is no reason for it. The official term for this function in SQL is `UNNEST` and it is rather confusing to not show this in the plan as well.




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