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https://issues.apache.org/jira/browse/CALCITE-7602?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mihai Budiu resolved CALCITE-7602.
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Fix Version/s: 1.43.0
Resolution: Fixed
Fixed in
[https://github.com/apache/calcite/commit/e7ec483951f25838f5f561e919791714ce2c7ccb]
Thank you for the review [~xuzifu666]
> ROW(*) loses column names
> -------------------------
>
> Key: CALCITE-7602
> URL: https://issues.apache.org/jira/browse/CALCITE-7602
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.42.0
> Reporter: Mihai Budiu
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.43.0
>
>
> The newly-introduced ROW( * ) and ROW(* EXCLUDE(cols)) constructors create a
> new ROW-valued column. However, the newly introduced ROW does not preserve
> the columns of the original table as field names.
> {code:java}
> SELECT R.deptno FROM (SELECT ROW(*) AS R FROM emp); {code}
> will produce an error:
> {code:java}
> Column R.deptno not found {code}
> The column names could be preserved by generating a CAST to an appropriate
> ROW type, by rewriting the inner expression as:
> {code:java}
> SELECT CAST(ROW(*) AS ROW(...columns of emp...)) AS R {code}
>
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