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zlzhang0122 commented on FLINK-24306: ------------------------------------- Hi, [~jark] I have found the reason and created a pr to fix it, can you help to confirm and review it? > 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, 1.14.2 > Reporter: zlzhang0122 > Priority: Major > Labels: pull-request-available > Fix For: 1.16.0 > > 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. > -- This message was sent by Atlassian Jira (v8.20.10#820010)