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From "Hyunsik Choi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TAJO-346) Implement hex function
Date Mon, 02 Dec 2013 00:27:35 GMT

    [ https://issues.apache.org/jira/browse/TAJO-346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13836156#comment-13836156
] 

Hyunsik Choi commented on TAJO-346:
-----------------------------------

I missed one more thing. This
function internally evaluates real values (i.e., float4 and float8) and integer types.

Tajo follow a strong typed system. Through out the system, we assume that parameters are passed
to a function with specified typed values defined in the function.

Instead, we have a plan to implement auto casting mechanism for user convenience.

So, I would like to suggest that this function evaluates only int8 type values.

> Implement hex function
> ----------------------
>
>                 Key: TAJO-346
>                 URL: https://issues.apache.org/jira/browse/TAJO-346
>             Project: Tajo
>          Issue Type: Sub-task
>          Components: operator/function/udf
>            Reporter: DaeMyung Kang
>            Assignee: DaeMyung Kang
>            Priority: Minor
>              Labels: newbie
>             Fix For: 0.8-incubating
>
>         Attachments: TAJO-346.2.patch, TAJO-346.patch
>
>
> hex("012") ---> 303132
> hex(10) ---> a
> hex(1.2) ---> 1
> hex(1.5) ---> 2



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