[jira] [Work logged] (HIVE-25969) Unable to reference table column named default

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-25969?focusedWorklogId=730757&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-730757 ]

ASF GitHub Bot logged work on HIVE-25969:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 22/Feb/22 10:30
            Start Date: 22/Feb/22 10:30
    Worklog Time Spent: 10m 
      Work Description: kasakrisz opened a new pull request #3045:
URL: https://github.com/apache/hive/pull/3045


   ### What changes were proposed in this pull request?
   Introduce parser token and rule for `default` keyword.
   Use the Token in SemanticAnalyzers when replacing `default` keyword with default constraint values.
   
   ### Why are the changes needed?
   Prior this patch 
   * the `default` keyword was treated as an identifier.
   * and the lookup in the sql text was done by exact match of the string `default` in some cases.
   
   ### Does this PR introduce _any_ user-facing change?
   Yes, see jira for example.
   
   ### How was this patch tested?
   ```
   mvn test -Dtest.output.overwrite -DskipSparkTests -Dtest=TestMiniLlapLocalCliDriver -Dqfile=insert_into_default_keyword.q,insert_into_default_keyword_2.q -pl itests/qtest -Pitests
   mvn test -Dtest=TestParseDefault -pl parser
   ```


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Issue Time Tracking
-------------------

            Worklog Id:     (was: 730757)
    Remaining Estimate: 0h
            Time Spent: 10m

> Unable to reference table column named default
> ----------------------------------------------
>
>                 Key: HIVE-25969
>                 URL: https://issues.apache.org/jira/browse/HIVE-25969
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Krisztian Kasa
>            Assignee: Krisztian Kasa
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> {code}
> CREATE TABLE t1 (a int, `default` int) stored as orc TBLPROPERTIES ('transactional'='true');
> insert into t1 values (1, 2), (10, 11);
> update t1 set a = `default`;
> select * from t1;
> {code}
> result is
> {code}
> NULL	NULL
> NULL	NULL
> {code}
> but it should be
> {code}
> 11	11
> 2	2
> {code}



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