[jira] [Commented] (DERBY-7051) Multiple DISTINCT columns are not supported

[Rick Hillegas (JIRA)]

    [ 
https://issues.apache.org/jira/browse/DERBY-7051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16907241#comment-16907241
 ] 

Rick Hillegas commented on DERBY-7051:
--------------------------------------

Try this:

{noformat}
connect 'jdbc:derby:memory:db;create=true';

CREATE TABLE t(userName VARCHAR(50), product VARCHAR(50));

SELECT
  (SELECT DISTINCT userName FROM t) userCount,
  (SELECT DISTINCT product FROM t) productCount
FROM sysibm.sysdummy1;
{noformat}

> Multiple DISTINCT columns are not supported
> -------------------------------------------
>
>                 Key: DERBY-7051
>                 URL: https://issues.apache.org/jira/browse/DERBY-7051
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>         Environment: derby-10.11.1.1;
>            Reporter: JackLi0812
>            Priority: Major
>
>  
> {code:java}
> SELECT DISTINCT (ORDERS.CUSTOMER_ID), DISTINCT (ORDERS.ORDER_ID)
> FROM ORDERS
> ORDER BY ORDERS.ORDER_ID
> ;{code}
> throw error: 
> {code:java}
> SQL Error [42X01]: Syntax error: Encountered "DISTINCT" at line 1, column 39.
> {code}



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