Timestamp comparisons don't work
--------------------------------

                 Key: HIVE-2558
                 URL: https://issues.apache.org/jira/browse/HIVE-2558
             Project: Hive
          Issue Type: Bug
            Reporter: Robert Surówka


I may be missing something, but:

After performing:

create table rrt (r timestamp);
insert into table rrt select '1970-01-01 00:00:01' from src limit 1;

Following queries give undesirable results:

select * from rrt where r in ('1970-01-01 00:00:01');
select * from rrt where r in (0); 
select * from rrt where r = 0; 
select * from rrt where r = '1970-01-01 00:00:01';

At least for the first two, the reason may be the lack of timestamp in 
numericTypes Map from FunctionRegistry.java (591) . Yet whether we really want 
to have a linear hierarchy of primitive types in the end, is another question.

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