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From "Adam Kramer (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-138) Provide option to export a HEADER
Date Mon, 08 Dec 2008 23:03:44 GMT
Provide option to export a HEADER
---------------------------------

                 Key: HIVE-138
                 URL: https://issues.apache.org/jira/browse/HIVE-138
             Project: Hadoop Hive
          Issue Type: Improvement
          Components: Clients, Query Processor
            Reporter: Adam Kramer
            Priority: Minor


    When writing data to directories or files for later analysis, or when exploring data in
the hive CLI with raw SELECT statements, it'd be great if we could get a "header" or something
so we know which columns our output comes from. Any chance this is easy to add? Just print
the column names (or formula used to generate them) in the first row?

SELECT foo.* WITH HEADER FROM some_table foo limit 3;

col1    col2    col3
1   9   6
7   5   0
7   5   3

SELECT f.col1-f.col2, col3 WITH HEADER FROM some_table foo limit 3;

f.col1-f.col2     col3
-8     6
2     0
2     3

...etc

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