[jira] [Commented] (HIVE-13977) nvl funtion not working after left outer join
[ https://issues.apache.org/jira/browse/HIVE-13977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15347644#comment-15347644 ] balaswamy vaddeman commented on HIVE-13977: --- This issue is same as https://issues.apache.org/jira/browse/HIVE-14027 > nvl funtion not working after left outer join > -- > > Key: HIVE-13977 > URL: https://issues.apache.org/jira/browse/HIVE-13977 > Project: Hive > Issue Type: Bug > Components: Hive >Affects Versions: 1.2.1 >Reporter: balaswamy vaddeman > > Recreating problem. > 1).Create table with sample data. > create table tabletest (n bigint, t string); > insert into tabletest values (1, 'one'); > insert into tabletest values(2, 'two'); > 2) Run leftouter join query on single table. > select a.n as leftHandN > , b.n as rightHandN > , b.t as rightHandT > , nvl(b.t,"empty") as rightHandTnvl -- Expected empty --> received empty > , nvl(b.n,-1) as rightHandNnvl -- Expected -1 --> received 1 > from > ( > select * > from tabletest > where n=1 > ) a > left outer join > ( > select * > from tabletest > where 1=2 > ) b > on a.n = b.n; > nvl(b.n,-1) should return -1 but returns 1. > I have found b.n always returning a.n value.if a.n is 1 ,b.n is returning 1 > and if it is 2,same 2 will be returned. > More information: > length(b.n) ---gives--->1 > cast(b.n as string) --gives--->1 > ascii(b.n) --gives>49 i.e 1 -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (HIVE-13977) nvl funtion not working after left outer join
[
https://issues.apache.org/jira/browse/HIVE-13977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15323978#comment-15323978
]
Gopal V commented on HIVE-13977:
[~vaddebalu]: I can't reproduce this issue in the latest hive, so it is likely
to have been fixed between 1.2.0 and 2.1.0
My query runs return
{code}
1 NULLNULLempty -1
Time taken: 2.526 seconds, Fetched: 1 row(s)
{code}
> nvl funtion not working after left outer join
> --
>
> Key: HIVE-13977
> URL: https://issues.apache.org/jira/browse/HIVE-13977
> Project: Hive
> Issue Type: Bug
> Components: Hive
>Affects Versions: 1.2.1
>Reporter: balaswamy vaddeman
>
> Recreating problem.
> 1).Create table with sample data.
> create table tabletest (n bigint, t string);
> insert into tabletest values (1, 'one');
> insert into tabletest values(2, 'two');
> 2) Run leftouter join query on single table.
> select a.n as leftHandN
> , b.n as rightHandN
> , b.t as rightHandT
> , nvl(b.t,"empty") as rightHandTnvl -- Expected empty --> received empty
> , nvl(b.n,-1) as rightHandNnvl -- Expected -1 --> received 1
> from
> (
> select *
> from tabletest
> where n=1
> ) a
> left outer join
> (
> select *
> from tabletest
> where 1=2
> ) b
> on a.n = b.n;
> nvl(b.n,-1) should return -1 but returns 1.
> I have found b.n always returning a.n value.if a.n is 1 ,b.n is returning 1
> and if it is 2,same 2 will be returned.
> More information:
> length(b.n) ---gives--->1
> cast(b.n as string) --gives--->1
> ascii(b.n) --gives>49 i.e 1
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[jira] [Commented] (HIVE-13977) nvl funtion not working after left outer join
[
https://issues.apache.org/jira/browse/HIVE-13977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15323915#comment-15323915
]
balaswamy vaddeman commented on HIVE-13977:
---
Plan not optimized by CBO.
Vertex dependency in root stage
Map 1 <- Map 2 (BROADCAST_EDGE)
Stage-0
Fetch Operator
limit:-1
Stage-1
Map 1
File Output Operator [FS_10]
compressed:false
Statistics:Num rows: 1 Data size: 5 Basic stats: COMPLETE Column
stats: NONE
table:{"input
format:":"org.apache.hadoop.mapred.TextInputFormat","output
format:":"org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat","serde:":"org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe"}
Select Operator [SEL_9]
outputColumnNames:["_col0","_col1","_col2","_col3","_col4"]
Statistics:Num rows: 1 Data size: 5 Basic stats: COMPLETE Column
stats: NONE
Map Join Operator [MAPJOIN_14]
| condition map:[{"":"Left Outer Join0 to 1"}]
| HybridGraceHashJoin:true
| keys:{"Map 2":"_col0 (type: bigint)","Map 1":"_col0 (type:
bigint)"}
| outputColumnNames:["_col0","_col2","_col3"]
| Statistics:Num rows: 1 Data size: 5 Basic stats: COMPLETE
Column stats: NONE
|<-Map 2 [BROADCAST_EDGE]
| Reduce Output Operator [RS_7]
| key expressions:_col0 (type: bigint)
| Map-reduce partition columns:_col0 (type: bigint)
| sort order:+
| Statistics:Num rows: 1 Data size: 5 Basic stats: COMPLETE
Column stats: NONE
| value expressions:_col1 (type: string)
| Select Operator [SEL_5]
|outputColumnNames:["_col0","_col1"]
|Statistics:Num rows: 1 Data size: 5 Basic stats:
COMPLETE Column stats: NONE
|Filter Operator [FIL_13]
| predicate:false (type: boolean)
| Statistics:Num rows: 1 Data size: 5 Basic stats:
COMPLETE Column stats: NONE
| TableScan [TS_3]
| alias:tabletest
| Statistics:Num rows: 2 Data size: 10 Basic stats:
COMPLETE Column stats: NONE
|<-Select Operator [SEL_2]
outputColumnNames:["_col0"]
Statistics:Num rows: 1 Data size: 5 Basic stats: COMPLETE
Column stats: NONE
Filter Operator [FIL_12]
predicate:(n = 1) (type: boolean)
Statistics:Num rows: 1 Data size: 5 Basic stats:
COMPLETE Column stats: NONE
TableScan [TS_0]
alias:tabletest
Statistics:Num rows: 2 Data size: 10 Basic stats:
COMPLETE Column stats: NONE
Time taken: 0.196 seconds, Fetched: 49 row(s)
> nvl funtion not working after left outer join
> --
>
> Key: HIVE-13977
> URL: https://issues.apache.org/jira/browse/HIVE-13977
> Project: Hive
> Issue Type: Bug
> Components: Hive
>Affects Versions: 1.2.1
>Reporter: balaswamy vaddeman
>
> Recreating problem.
> 1).Create table with sample data.
> create table tabletest (n bigint, t string);
> insert into tabletest values (1, 'one');
> insert into tabletest values(2, 'two');
> 2) Run leftouter join query on single table.
> select a.n as leftHandN
> , b.n as rightHandN
> , b.t as rightHandT
> , nvl(b.t,"empty") as rightHandTnvl -- Expected empty --> received empty
> , nvl(b.n,-1) as rightHandNnvl -- Expected -1 --> received 1
> from
> (
> select *
> from tabletest
> where n=1
> ) a
> left outer join
> (
> select *
> from tabletest
> where 1=2
> ) b
> on a.n = b.n;
> nvl(b.n,-1) should return -1 but returns 1.
> I have found b.n always returning a.n value.if a.n is 1 ,b.n is returning 1
> and if it is 2,same 2 will be returned.
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[jira] [Commented] (HIVE-13977) nvl funtion not working after left outer join
[
https://issues.apache.org/jira/browse/HIVE-13977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15322138#comment-15322138
]
Gopal V commented on HIVE-13977:
[~vaddebalu]: can you post the output of "explain " with {{set
hive.execution.engine=tez;}} ?
> nvl funtion not working after left outer join
> --
>
> Key: HIVE-13977
> URL: https://issues.apache.org/jira/browse/HIVE-13977
> Project: Hive
> Issue Type: Bug
> Components: Hive
>Affects Versions: 1.2.1
>Reporter: balaswamy vaddeman
>
> Recreating problem.
> 1).Create table with sample data.
> create table tabletest (n bigint, t string);
> insert into tabletest values (1, 'one');
> insert into tabletest values(2, 'two');
> 2) Run leftouter join query on single table.
> select a.n as leftHandN
> , b.n as rightHandN
> , b.t as rightHandT
> , nvl(b.t,"empty") as rightHandTnvl -- Expected empty --> received empty
> , nvl(b.n,-1) as rightHandNnvl -- Expected -1 --> received 1
> from
> (
> select *
> from tabletest
> where n=1
> ) a
> left outer join
> (
> select *
> from tabletest
> where 1=2
> )
> on a.n = b.n;
> nvl(b.n,-1) should return -1 but returns 1.
> I have found b.n always returning a.n value.if a.n is 1 ,b.n is returning 1
> and if it is 2,same 2 will be returned.
--
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(v6.3.4#6332)
