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https://issues.apache.org/jira/browse/FLINK-24306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17416057#comment-17416057
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Jark Wu commented on FLINK-24306:
---------------------------------
Thanks [~zlzhang0122], could you help to link the Calcite issue?
> group by index throw SqlValidatorException
> ------------------------------------------
>
> Key: FLINK-24306
> URL: https://issues.apache.org/jira/browse/FLINK-24306
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.12.2, 1.13.1
> Reporter: zlzhang0122
> Priority: Major
> Fix For: 1.15.0
>
> Attachments: calcite.png, sql_exception.png
>
>
> We create a table using following DDL:
> {code:java}
> create table if not exists datagen_source (
> id int,
> name string,
> sex string,
> age int,
> birthday string,
> proc_time as proctime()
> ) with (
> 'connector' = 'datagen',
> 'rows-per-second' = '10000',
> 'fields.id.kind' = 'random',
> 'fields.id.min' = '1',
> 'fields.id.max' = '2000000');{code}
> When we running
> {code:java}
> select id, count(*) from datagen_source group by id;{code}
> Everything will be fine.But if we running
> {code:java}
> select id, count(*) from datagen_source group by 1;{code}
> We will get a SqlValidatorException like this:
> !sql_exception.png!
> Since MySql\Hive\Spark SQL\etc. all support group by index, I think Flink
> also should support this syntax too.
>
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