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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-437) Allow both table.col and col.field in the grammar
Date Wed, 22 Apr 2009 10:04:47 GMT

     [ https://issues.apache.org/jira/browse/HIVE-437?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zheng Shao updated HIVE-437:
----------------------------

    Attachment: HIVE-437.2.code-only.patch

Talked with the team offline and make some changes:

1. We will now output an error if an identifier in the expression can be both a table alias
and a column.

2. The Expression GraphWalker's process will return NULL for a table name. Originally we were
returning a String for table name, and exprNodeDesc for others, which is not good.  I didn't
change the PartitionPruner in the same direction, because we are going to refactor that code
completely pretty soon.


> Allow both table.col and col.field in the grammar
> -------------------------------------------------
>
>                 Key: HIVE-437
>                 URL: https://issues.apache.org/jira/browse/HIVE-437
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 0.4.0
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>         Attachments: HIVE-437.1.code-only.patch, HIVE-437.1.patch, HIVE-437.2.code-only.patch,
HIVE-437.2.patch
>
>
> There is a bug in the grammar that only allows table.col but not col.field. We should
allow both.

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