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

["Xiao Li (JIRA)" <ji...@apache.org>]

Xiao Li created SPARK-21129:
-------------------------------

             Summary: 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: 2.1.1, 2.0.2, 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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