hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Xiu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-3194) implement the JDBC canonical/ISO-SQL 2012 scalar functions
Date Tue, 27 Aug 2013 22:09:51 GMT

     [ https://issues.apache.org/jira/browse/HIVE-3194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xiu updated HIVE-3194:
----------------------

    Affects Version/s: 0.11.0
               Status: Patch Available  (was: Open)

This patch supplies information on canonical JDBC scalar functions in HiveDatabaseMetaData
class by providing a comma-separated list of the Open Group CLI names of numeric functions
and string functions. The corresponding testcase is also added.

In terms of mod(), Hive is supporting "a % b" but not mod(a, b) right now, unlike MySQL, which
supports both.

The support of semantic "mod(a, b)" should be a good idea. I will create another JIRA for
this.
                
> implement the JDBC canonical/ISO-SQL 2012 scalar functions
> ----------------------------------------------------------
>
>                 Key: HIVE-3194
>                 URL: https://issues.apache.org/jira/browse/HIVE-3194
>             Project: Hive
>          Issue Type: Improvement
>          Components: JDBC, SQL, UDF
>    Affects Versions: 0.11.0, 0.8.0
>            Reporter: N Campbell
>         Attachments: Hive-3194.patch
>
>
> The Hive driver does not return any canonical JDBC scalar functions (per JDBC 3.0/4.0).
Similarly, while Hive has various 'similar' scalar functions their signature (name etc) is
not the same as ISO-SQL equivalent. It would be better for portable dynamic SQL applications
to see more alignment by Hive etc to both standards. In some cases it is small syntactic changes/tweaks
(i.e. see mod, substring etc).

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message