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https://issues.apache.org/jira/browse/FLINK-10273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16605340#comment-16605340
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Timo Walther commented on FLINK-10273:
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[~walterddr] yes, this only occurs in SQL. It is not a runtime problem but a
Calcite parser/validator issue.
> Access composite type fields after a function
> ---------------------------------------------
>
> Key: FLINK-10273
> URL: https://issues.apache.org/jira/browse/FLINK-10273
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Affects Versions: 1.7.0
> Reporter: Timo Walther
> Priority: Major
>
> If a function returns a composite type, for example, {{Row(lon: Float, lat:
> Float)}}. There is currently no way of accessing fields.
> Both queries fail with exceptions:
> {code}
> select t.c.lat, t.c.lon FROM (select toCoords(12) as c) AS t
> {code}
> {code}
> select toCoords(12).lat
> {code}
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