spark-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Dongjoon Hyun (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-28377) Fully support correlation names in the FROM clause
Date Sun, 28 Jul 2019 20:18:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-28377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16894788#comment-16894788
] 

Dongjoon Hyun commented on SPARK-28377:
---------------------------------------

You can increase the priority if you want, [~yumwang].

> Fully support correlation names in the FROM clause
> --------------------------------------------------
>
>                 Key: SPARK-28377
>                 URL: https://issues.apache.org/jira/browse/SPARK-28377
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Yuming Wang
>            Priority: Major
>
> Specifying a list of column names is not fully support. Example:
> {code:sql}
> create or replace temporary view J1_TBL as select * from
>  (values (1, 4, 'one'), (2, 3, 'two'))
>  as v(i, j, t);
> create or replace temporary view J2_TBL as select * from
>  (values (1, -1), (2, 2))
>  as v(i, k);
> SELECT '' AS xxx, t1.a, t2.e
>   FROM J1_TBL t1 (a, b, c), J2_TBL t2 (d, e)
>   WHERE t1.a = t2.d;
> {code}
> PostgreSQL:
> {noformat}
> postgres=# SELECT '' AS xxx, t1.a, t2.e
> postgres-#   FROM J1_TBL t1 (a, b, c), J2_TBL t2 (d, e)
> postgres-#   WHERE t1.a = t2.d;
>  xxx | a | e
> -----+---+----
>      | 1 | -1
>      | 2 |  2
> (2 rows)
> {noformat}
> Spark SQL:
> {noformat}
> spark-sql> SELECT '' AS xxx, t1.a, t2.e
>          >   FROM J1_TBL t1 (a, b, c), J2_TBL t2 (d, e)
>          >   WHERE t1.a = t2.d;
> Error in query: cannot resolve '`t1.a`' given input columns: [a, b, c, d, e]; line 3
pos 8;
> 'Project [ AS xxx#21, 't1.a, 't2.e]
> +- 'Filter ('t1.a = 't2.d)
>    +- Join Inner
>       :- Project [i#14 AS a#22, j#15 AS b#23, t#16 AS c#24]
>       :  +- SubqueryAlias `t1`
>       :     +- SubqueryAlias `j1_tbl`
>       :        +- Project [i#14, j#15, t#16]
>       :           +- Project [col1#11 AS i#14, col2#12 AS j#15, col3#13 AS t#16]
>       :              +- SubqueryAlias `v`
>       :                 +- LocalRelation [col1#11, col2#12, col3#13]
>       +- Project [i#19 AS d#25, k#20 AS e#26]
>          +- SubqueryAlias `t2`
>             +- SubqueryAlias `j2_tbl`
>                +- Project [i#19, k#20]
>                   +- Project [col1#17 AS i#19, col2#18 AS k#20]
>                      +- SubqueryAlias `v`
>                         +- LocalRelation [col1#17, col2#18]
> {noformat}
>  
> *Feature ID*: E051-08
> [https://www.postgresql.org/docs/11/sql-expressions.html]
> [https://www.ibm.com/support/knowledgecenter/en/SSEPEK_10.0.0/sqlref/src/tpc/db2z_correlationnames.html]



--
This message was sent by Atlassian JIRA
(v7.6.14#76016)

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


Mime
View raw message