[jira] [Commented] (SPARK-21129) Arguments of SQL function call should not be named expressions

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-21129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16052990#comment-16052990 ] 

Apache Spark commented on SPARK-21129:
--------------------------------------

User 'gatorsmile' has created a pull request for this issue:
https://github.com/apache/spark/pull/18338

> Arguments of SQL function call should not be named expressions
> --------------------------------------------------------------
>
>                 Key: SPARK-21129
>                 URL: https://issues.apache.org/jira/browse/SPARK-21129
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.0.2, 2.1.1, 2.2.0
>            Reporter: Xiao Li
>            Assignee: Xiao Li
>
> Function argument should not be named expressions. It could cause misleading error message.
> {noformat}
> spark-sql> select count(distinct c1, distinct c2) from t1;
> {noformat}
> {noformat}
> Error in query: cannot resolve '`distinct`' given input columns: [c1, c2]; line 1 pos 26;
> 'Project [unresolvedalias('count(c1#30, 'distinct), None)]
> +- SubqueryAlias t1
>    +- CatalogRelation `default`.`t1`, org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe, [c1#30, c2#31]
> {noformat}



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