[jira] [Resolved] (SPARK-34199) Block `count(table.*)` to follow ANSI standard and other SQL engines

["Wenchen Fan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-34199?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-34199.
---------------------------------
    Fix Version/s: 3.2.0
       Resolution: Fixed

Issue resolved by pull request 31286
[https://github.com/apache/spark/pull/31286]

> Block `count(table.*)` to follow ANSI standard and other SQL engines
> --------------------------------------------------------------------
>
>                 Key: SPARK-34199
>                 URL: https://issues.apache.org/jira/browse/SPARK-34199
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 3.2.0
>            Reporter: Linhong Liu
>            Assignee: Linhong Liu
>            Priority: Major
>             Fix For: 3.2.0
>
>
> In spark, the count(table.*) may cause very weird result, for example:
> select count(*) from (select 1 as a, null as b) t;
> output: 1
> select count(t.*) from (select 1 as a, null as b) t;
> output: 0
>  
> After checking the ANSI standard, count(*) is always treated as count(1) while count(t.*) is not allowed. What's more, this is also not allowed by common databases, e.g. MySQL, oracle.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org