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https://issues.apache.org/jira/browse/FLINK-10273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16607907#comment-16607907
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Rong Rong commented on FLINK-10273:
-----------------------------------
I found a solution via modifying Calcite {{Parser.jj}}. However, it probably
will need some additional polish to be able to added to Calcite's release. I
will create a JIRA ticket though.
> 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
> Assignee: Rong Rong
> 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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