HIVE-12943- Use default not working

[Kashish Jain]

Hi,


I want to discuss about this bug and the possible resolutions for this. I have 
done a fix in my local and the issue seems to be resolved. The pull request for 
the same is https://github.com/apache/hive/pull/65

 Can someone review this please?


Thanks

Kashish Jain

[jira] [Created] (HIVE-12943) Use default doesnot work in Hive 1.2.1

[Kashish Jain (JIRA)]

Kashish Jain created HIVE-12943:
---

 Summary: Use default doesnot work in Hive 1.2.1
 Key: HIVE-12943
 URL: https://issues.apache.org/jira/browse/HIVE-12943
 Project: Hive
  Issue Type: Bug
  Components: Database/Schema
Affects Versions: 1.2.1
Reporter: Kashish Jain
 Fix For: 1.3.0, 1.2.2, 1.2.1


"USE Default" does not work with the latest hive 1.2.1
The message is 
"
   Cannot recognize input near 'default' '' '' in switch database 
statement; line 1 pos 4
   NoViableAltException(81@[])
   at 
org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.identifier(HiveParser_IdentifiersParser.java:11577)
   at 
org.apache.hadoop.hive.ql.parse.HiveParser.identifier(HiveParser.java:46055)
"

According to my analysis this may be due to the removal of "KW_DEFAULT" keyword 
from the grammar of Hive parser according to the bug 
https://issues.apache.org/jira/browse/HIVE-6617

Adding the KW_DEFAULT keyword back to the HiveParser.g, HiveLexer.g and 
Identifier.g and It worked. Wish to push it to apache-hive



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