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Posted to issues@spark.apache.org by "jiasheng55 (Jira)" <ji...@apache.org> on 2021/11/19 08:00:00 UTC
[jira] [Commented] (SPARK-37382) `with as` clause got inconsistent results
[ https://issues.apache.org/jira/browse/SPARK-37382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17446344#comment-17446344 ]
jiasheng55 commented on SPARK-37382:
------------------------------------
The imsages are broken, please have a look:)
> `with as` clause got inconsistent results
> -----------------------------------------
>
> Key: SPARK-37382
> URL: https://issues.apache.org/jira/browse/SPARK-37382
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.1.2
> Reporter: caican
> Priority: Major
>
> In Spark3.1, the `with as` clause in the same SQL is executed multiple times, got different results
> `
> with tab as (
> select 'Withas' as name, rand() as rand_number
> )
> select name, rand_number
> from tab
> union all
> select name, rand_number
> from tab
> `
> !https://internal-api-lark-file.f.mioffice.cn/api/image/keys/img_bcf6f867-6aee-4afe-bc43-30bf4f2dbdel?message_id=7032102765711097965!
> But In spark2.3, it got consistent results
> `
> with tab as (
> select 'Withas' as name, rand() as rand_number
> )
> select name, rand_number
> from tab
> union all
> select name, rand_number
> from tab
> `
> !https://internal-api-lark-file.f.mioffice.cn/api/image/keys/img_6dc6e44b-d4a5-4b0d-bd2c-00859ec80a1l?message_id=7032104202756751468!
> Why does Spark3.1.2 return different results?
> Has anyone encountered this problem?
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