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https://issues.apache.org/jira/browse/TAJO-1452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14383358#comment-14383358
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Dongjoon Hyun commented on TAJO-1452:
-------------------------------------

Thank you, [~sirpkt]. I had tried to group the functions as you suggest, but it 
was not easy due to multiple input functions as you mentioned.
So, I designed like this up to now. However, there can be many improvement 
ideas. 
I will welcome any comments in addition to yours. Thank you again.

Warmly,
Dongjoon

> Improve function listing order
> ------------------------------
>
>                 Key: TAJO-1452
>                 URL: https://issues.apache.org/jira/browse/TAJO-1452
>             Project: Tajo
>          Issue Type: Improvement
>          Components: cli, web UI
>            Reporter: Dongjoon Hyun
>            Assignee: Dongjoon Hyun
>            Priority: Trivial
>             Fix For: 0.10.1
>
>         Attachments: TAJO-1452.Hyun.150327.0.patch.txt
>
>
> Tajo shows users function list in two places(CLI,Web) in only alphabetical 
> `function name` and emunerical(not alphabetical) `result type` order. This 
> issue propose to display them in full alphabetical `function name`, `type`, 
> `result type', 'argument type' order.
> *tsql*
> {code}
> default> \df sum
>  Name            | Result type     | Argument types        | Description      
>                              | Type      
> -----------------+-----------------+-----------------------+-----------------------------------------------+-----------
>  sum             | INT8            | int4                  | the sum of a set 
> of numbers                   | AGGREGATIO
>  sum             | INT8            | int8                  | the sum of a set 
> of numbers                   | AGGREGATIO
>  sum             | INT8            | int8                  | the sum of a 
> distinct and non-null values     | DISTINCT_A
>  sum             | INT8            | int4                  | the sum of a 
> distinct and non-null values     | DISTINCT_A
>  sum             | FLOAT8          | float8                | the sum of a 
> distinct and non-null values     | DISTINCT_A
>  sum             | FLOAT8          | float4                | the sum of a 
> distinct and non-null values     | DISTINCT_A
>  sum             | FLOAT8          | float8                | the sum of a set 
> of numbers                   | AGGREGATIO
>  sum             | FLOAT8          | float4                | the sum of a set 
> of numbers                   | AGGREGATIO
> {code}
> {code}
> default> \df sum
>  Name            | Result type     | Argument types        | Description      
>                              | Type      
> -----------------+-----------------+-----------------------+-----------------------------------------------+-----------
>  sum             | float8          | float4                | the sum of a set 
> of numbers                   | aggregatio
>  sum             | float8          | float8                | the sum of a set 
> of numbers                   | aggregatio
>  sum             | int8            | int4                  | the sum of a set 
> of numbers                   | aggregatio
>  sum             | int8            | int8                  | the sum of a set 
> of numbers                   | aggregatio
>  sum             | float8          | float4                | the sum of a 
> distinct and non-null values     | distinct_a
>  sum             | float8          | float8                | the sum of a 
> distinct and non-null values     | distinct_a
>  sum             | int8            | int4                  | the sum of a 
> distinct and non-null values     | distinct_a
>  sum             | int8            | int8                  | the sum of a 
> distinct and non-null values     | distinct_a
> {code}
> `http://localhost:26080/functions.jsp` will change the result in the same 
> order.



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