[jira] [Created] (TAJO-1900) When a record column and its child column are retrieved together, the record column might not be inferred as record type properly

[Jihoon Son (JIRA)]

Jihoon Son created TAJO-1900:
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             Summary: When a record column and its child column are retrieved 
together, the record column might not be inferred as record type properly
                 Key: TAJO-1900
                 URL: https://issues.apache.org/jira/browse/TAJO-1900
             Project: Tajo
          Issue Type: Bug
          Components: Planner/Optimizer
            Reporter: Jihoon Son
            Assignee: Jihoon Son


For example, given a following query, the column 'glossary' can be inferred as 
the TEXT type rather than the RECORD type.
{noformat}
default> select glossary from self_desc_table2 where 
char_length(glossary."GlossDiv".title) > 0 
{noformat}

This is because columns of the query are inferred in an arbitrary order, and 
there isn't any routine to resolve the conflict of inferred data type.



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