[
https://issues.apache.org/jira/browse/FLINK-36639?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Dawid Wysakowicz updated FLINK-36639:
-------------------------------------
Description:
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}
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}
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}}.
was:
Certain operations do not work without explicitly scoping a fieldreference. For
example:
```
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`
)
```
fails with:
```
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`
)
```
but a query like:
```
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
```
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`.
> 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
> 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}
> 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}
> 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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