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Posted to issues@spark.apache.org by "Michael Armbrust (JIRA)" <ji...@apache.org> on 2015/09/15 23:38:46 UTC

[jira] [Resolved] (SPARK-5397) Assigning aliases to several return values of an UDF

     [ https://issues.apache.org/jira/browse/SPARK-5397?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Armbrust resolved SPARK-5397.
-------------------------------------
       Resolution: Fixed
    Fix Version/s: 1.5.0

Tested in 1.5 and this query now parses correctly.

> Assigning aliases to several return values of an UDF
> ----------------------------------------------------
>
>                 Key: SPARK-5397
>                 URL: https://issues.apache.org/jira/browse/SPARK-5397
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Max
>             Fix For: 1.5.0
>
>
> The query with following syntax is no valid SQL in Spark due to the assigment of multiple aliases.
> So it seems not possible for me to port former HiveQL queries with UDFs returning multiple values to Spark SQL.
> Query 
> -------- 
> SELECT my_function(param_one, param_two) AS (return_one, return_two,
> return_three) 
> FROM my_table; 
> Error 
> -------- 
> Unsupported language features in query: SELECT my_function(param_one,
> param_two) AS (return_one, return_two, return_three) 
> FROM my_table; 
> TOK_QUERY 
>   TOK_FROM 
>     TOK_TABREF 
>       TOK_TABNAME 
>         my_table 
>     TOK_SELECT 
>       TOK_SELEXPR 
>         TOK_FUNCTION 
>           my_function 
>           TOK_TABLE_OR_COL 
>             param_one 
>           TOK_TABLE_OR_COL 
>             param_two 
>         return_one 
>         return_two 
>         return_three 



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