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From sansanichfb <...@git.apache.org>
Subject [GitHub] incubator-hawq-docs pull request #63: HAWQ-1164 hcatalog access restrictions
Date Tue, 22 Nov 2016 00:39:50 GMT
Github user sansanichfb commented on a diff in the pull request:

    https://github.com/apache/incubator-hawq-docs/pull/63#discussion_r89021822
  
    --- Diff: pxf/HivePXF.html.md.erb ---
    @@ -553,7 +569,7 @@ Alternatively, you can use the `pxf_get_item_fields` user-defined
function (UDF)
     HCatalog integration has the following limitations:
     
     -   HCatalog integration queries and describe commands do not support complex types;
only primitive types are supported. Use PXF external tables to query complex types in Hive.
(See [Complex Types Example](#complex_dt_example).)
    --   Even for primitive types, HCatalog metadata descriptions produced by `\d` and` \d+`
are converted to HAWQ types. For example, the Hive type `tinyint` is converted to HAWQ type
`int2`. (See [Data Type Mapping](#hive_primdatatypes).)
    +-   Even for primitive types, HCatalog metadata descriptions produced by `\d` are converted
to HAWQ types. For example, the Hive type `tinyint` is converted to HAWQ type `int2`. (See
[Data Type Mapping](#hive_primdatatypes).)
    --- End diff --
    
    In this case more accurate is to say that \d show's Hawq's interpretation of underlying
Hive's datatypes, and \d+ shows both interpreted and original types.


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