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From "Patrick Hunt (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-2358) JDBC DatabaseMetaData and ResultSetMetaData need to match for particular types
Date Mon, 08 Aug 2011 21:44:27 GMT
JDBC DatabaseMetaData and ResultSetMetaData need to match for particular types
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                 Key: HIVE-2358
                 URL: https://issues.apache.org/jira/browse/HIVE-2358
             Project: Hive
          Issue Type: Bug
          Components: JDBC
    Affects Versions: 0.8.0
            Reporter: Patrick Hunt
            Assignee: Patrick Hunt
             Fix For: 0.8.0


My patch for HIVE-1631 did not ensure the following (from comment on 1631):
-------------
Mythili Gopalakrishnan added a comment - 08/Aug/11 08:42

Just tested this fix and does NOT work correctly. Here are my findings on a FLOAT column

Without Patch on a FLOAT Column
--------------------------------
DatabaseMetaData.getColumns () COLUMN_SIZE returns 12
DatabaseMetaData.getColumns () DECIMAL_DIGITS - returns 0

ResultSetMetaData.getPrecision() returns 0
ResultSetMetaData.getScale() returns 0

With Patch on a FLOAT Column
----------------------------
DatabaseMetaData.getColumns () COLUMN_SIZE returns 24
DatabaseMetaData.getColumns () DECIMAL_DIGITS - returns 0

ResultSetMetaData.getPrecision() returns 7
ResultSetMetaData.getScale() returns 7

Also both DatabaseMetadata and ResultSetMetaData must return the same information for Precision
and Scale for FLOAT,DOUBLE types.


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