Dongjoon Hyun created TAJO-1452:
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             Summary: 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


Tajo shows users function list in two places(CLI,Web) in only alphabetical 
`function name` order. This issue propose to display them in `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             | 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 set 
of numbers                   | AGGREGATIO
 sum             | FLOAT8          | float8                | the sum of a set 
of numbers                   | AGGREGATIO
 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
 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
{code}

Please note that the 'Result Type', 'Argument Type' is sorted by size. 
`http://localhost:26080/functions.jsp` will change the result in the same order.




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