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

["Kashish Jain (JIRA)" <ji...@apache.org>]

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' '<EOF>' '<EOF>' 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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