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https://issues.apache.org/jira/browse/FLINK-36639?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dawid Wysakowicz closed FLINK-36639.
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Resolution: Implemented
Implemented in 03c8185090ef7f91b525315ff828afdd97925c0d
> Use table aliases in Table API asSerializableString
> ---------------------------------------------------
>
> Key: FLINK-36639
> URL: https://issues.apache.org/jira/browse/FLINK-36639
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / API
> Reporter: Dawid Wysakowicz
> Assignee: Dawid Wysakowicz
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.0.0
>
>
> Certain operations do not work without explicitly scoping a fieldreference.
> For example:
> {code}
> SELECT `composite_column`.`f0_nested` FROM (
> SELECT
> (CAST(ROW(`f0`, 'a') AS ROW<`f0_nested` BIGINT, `f1_nested`
> VARCHAR(2147483647)>)) AS `composite_column`
> FROM `data`
> )
> {code}
> fails with:
> {code}
> Table `composite_column` not found
> {code}
> but a query like:
> {code}
> SELECT `t`.`composite_column`.`f0_nested` FROM (
> SELECT
> (CAST(ROW(`f0`, 'a') AS ROW<`f0_nested` BIGINT, `f1_nested`
> VARCHAR(2147483647)>)) AS `composite_column`
> FROM `data`
> ) t
> {code}
> works just fine. Unfortunately, this can not be achieved in Table API
> manually. Therefore the proposal is to scope all columns in all
> {{QueryOperation#asSerializableString}}.
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