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From "ransom.hezhiqiang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-4365) wrong result in left semi join
Date Tue, 16 Apr 2013 09:11:16 GMT
ransom.hezhiqiang created HIVE-4365:
---------------------------------------

             Summary: wrong result in left semi join
                 Key: HIVE-4365
                 URL: https://issues.apache.org/jira/browse/HIVE-4365
             Project: Hive
          Issue Type: Bug
          Components: Query Processor
    Affects Versions: 0.10.0, 0.9.0
            Reporter: ransom.hezhiqiang


wrong result in left semi join while hive.optimize.ppd=true
for example:
1、create table
   create table t1(c1 int,c2 int, c3 int, c4 int, c5 double,c6 int,c7 string)   row format
DELIMITED FIELDS TERMINATED BY '|';
   create table t2(c1 int) ;
2、load data
load data local inpath '/home/omm/t1.txt' OVERWRITE into table t1;
load data local inpath '/home/omm/t2.txt' OVERWRITE into table t2;
t1 data:
1|3|10003|52|781.96|555|201203
1|3|10003|39|782.96|555|201203
1|3|10003|87|783.96|555|201203
2|5|10004|24|789.96|555|201203
2|5|10004|58|788.96|555|201203
t2 data:
555
3、excute Query
select t1.c1,t1.c2,t1.c3,t1.c4,t1.c5,t1.c6,t1.c7  from t1 left semi join t2 on t1.c6 = t2.c1
and  t1.c1 =  '1' and t1.c7 = '201203' ;   
can got result.
select t1.c1,t1.c2,t1.c3,t1.c4,t1.c5,t1.c6,t1.c7  from t1 left semi join t2 on t1.c6 = t2.c1
where t1.c1 =  '1' and t1.c7 = '201203' ;   
can't got result.



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