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https://issues.apache.org/jira/browse/HIVE-12184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14967554#comment-14967554
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Xuefu Zhang commented on HIVE-12184:
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Yes. It does sounds like a dupe. The real problem is "A.B" can either mean
"DB.TABLE" or "TABLE.COLUMN" and there is no way to differentiate it.
The fix is to change the grammar such that we don't have such an ambiguity.
> DESCRIBE of fully qualified table fails when db and table name match and
> non-default database is in use
> -------------------------------------------------------------------------------------------------------
>
> Key: HIVE-12184
> URL: https://issues.apache.org/jira/browse/HIVE-12184
> Project: Hive
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.2.1
> Reporter: Lenni Kuff
> Assignee: Naveen Gangam
> Attachments: HIVE-12184.2.patch, HIVE-12184.patch
>
>
> DESCRIBE of fully qualified table fails when db and table name match and
> non-default database is in use.
> Repro:
> {code}
> : jdbc:hive2://localhost:10000/default> create database foo;
> No rows affected (0.116 seconds)
> 0: jdbc:hive2://localhost:10000/default> create table foo.foo(i int);
> 0: jdbc:hive2://localhost:10000/default> describe foo.foo;
> +-----------+------------+----------+--+
> | col_name | data_type | comment |
> +-----------+------------+----------+--+
> | i | int | |
> +-----------+------------+----------+--+
> 1 row selected (0.049 seconds)
> 0: jdbc:hive2://localhost:10000/default> use foo;
> 0: jdbc:hive2://localhost:10000/default> describe foo.foo;
> Error: Error while processing statement: FAILED: Execution Error, return code
> 1 from org.apache.hadoop.hive.ql.exec.DDLTask. Error in getting fields from
> serde.Invalid Field foo (state=08S01,code=1)
> {code}
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