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