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https://issues.apache.org/jira/browse/FLINK-3792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15250140#comment-15250140
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Fabian Hueske commented on FLINK-3792:
--------------------------------------
I think this should be checked at API level, not when the plan is optimized and
the DataSet / DataStream program is constructed.
Field names are not relevant when the program (Table or SQL) is executed. Also,
{{Row}} does not provide access by name but only by position.
> RowTypeInfo equality should not depend on field names
> -----------------------------------------------------
>
> Key: FLINK-3792
> URL: https://issues.apache.org/jira/browse/FLINK-3792
> Project: Flink
> Issue Type: Bug
> Components: Table API
> Affects Versions: 1.1.0
> Reporter: Vasia Kalavri
>
> Currently, two Rows with the same field types but different field names are
> not considered equal by the Table API and SQL. This behavior might create
> problems, e.g. it makes the following union query fail:
> {code}
> SELECT STREAM a, b, c FROM T1 UNION ALL
> (SELECT STREAM d, e, f FROM T2 WHERE d < 3)
> {code}
> where a, b, c and d, e, f are fields of corresponding types.
> {code}
> Cannot union streams of different types: org.apache.flink.api.table.Row(a:
> Integer, b: Long, c: String) and org.apache.flink.api.table.Row(d: Integer,
> e: Long, f: String)
> {code}
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