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From "Hyunsik Choi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (TAJO-210) Implement String concatenation operator (||)
Date Thu, 26 Sep 2013 08:52:02 GMT

     [ https://issues.apache.org/jira/browse/TAJO-210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hyunsik Choi updated TAJO-210:
------------------------------

    Attachment: TAJO-206.patch

I've updated the patch. The usage of string concatenation operator is as follows:

{code}
select ('abc' || 'def') col1;
select 'abc' || 'def' as col1;
select 1 || 'def' as col1;
select (1+3) || 2 as col1;

select col1 || col2 || col3 from table1;
select col1 || '---' || col3 from table1;
{code}
                
> Implement String concatenation operator (||)
> --------------------------------------------
>
>                 Key: TAJO-210
>                 URL: https://issues.apache.org/jira/browse/TAJO-210
>             Project: Tajo
>          Issue Type: Sub-task
>          Components: parser, physical operator, planner/optimizer
>            Reporter: Hyunsik Choi
>            Priority: Minor
>              Labels: newbie
>             Fix For: 0.2-incubating
>
>         Attachments: TAJO-206.patch
>
>
> String concatenation operator (||) is a SQL standard string operator. We should implement
this.

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