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https://issues.apache.org/jira/browse/CASSANDRA-5723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13701213#comment-13701213
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Jonathan Ellis commented on CASSANDRA-5723:
-------------------------------------------

bq. Instead, I would suggest adding a new, fixed, DateType (TimestampType or 
DateTimeType maybe?). And for CQL3, we would switch to that for the 'timestamp' 
type (which would not switch existing table however, since they would still be 
DateType internally). We can also make it so that switching (manually) from/to 
DateType to that new type is allowed (with maybe a warning in the log)

Sounds reasonable.  What would we show for the old tables on the CQL side?  
"oldtimestamp?"  

(I would vote for TimestampType.)
                
> DateType (timestamp type in CQL3) does not sort pre-'unix epoch' dates 
> correctly
> --------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-5723
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5723
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.2.3
>            Reporter: zhouhero
>             Fix For: 1.2.3
>
>
> - this bug can be confirmed by fellow:
> 1.create table like fellow:
> create table test2 (
> id varchar,
> c varchar,
> create_date timestamp,
> primary key(id)
> );
> create index idx_test2_c on test2 (c);
> create index idx_test2_create_date on test2 (create_date);
> 2.insert data like fellow;
> cqlsh:pgl> update test2 set create_date='1950-01-01', c='1' where id='111';
> cqlsh:pgl> update test2 set create_date='1917-01-01', c='1' where id='111';
> cqlsh:pgl> update test2 set create_date='2013-01-01', c='1' where id='111';
> 3.select data :
> cqlsh:pgl> select * from test2 where c='1' and create_date>'2011-01-01 
> 12:00:01' ALLOW FILTERING ;
> id | c | create_date
> -----+---+--------------------------
> 111 | 1 | 2012-12-31 15:00:00+0000
> 4. add data:
> update test2 set create_date='1917-05-01', c='1' where id='111';
> 5.select data:
> cqlsh:pgl> select * from test2 where c='1' and create_date>'2011-01-01 
> 12:00:01' ALLOW FILTERING ;
> id | c | create_date
> -----+---+--------------------------
> 111 | 1 | 1917-04-30 15:00:00+0000
> ↑
> the search result is not right!
> it should be fellow:
> id | c | create_date
> -----+---+--------------------------
> 111 | 1 | 2012-12-31 15:00:00+0000

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