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https://issues.apache.org/jira/browse/HIVE-16936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bing Li reassigned HIVE-16936:
------------------------------
Assignee: Bing Li
> wrong result with CTAS(create table as select)
> ----------------------------------------------
>
> Key: HIVE-16936
> URL: https://issues.apache.org/jira/browse/HIVE-16936
> Project: Hive
> Issue Type: Bug
> Affects Versions: 1.2.1
> Reporter: Xiaomeng Huang
> Assignee: Bing Li
> Priority: Critical
>
> 1.
> {code}
> hive> desc abc_test_old;
> OK
> did string
> activetime int
> {code}
> 2.
> {code}
> hive> select 'test' as did from abc_test_old
> > where did = '5FCAFD34-C124-4E13-AF65-27B675C945CC' limit 1;
> OK
> test
> {code}
> result is 'test'
> 3.
> {code}
> hive> create table abc_test_12345 as
> > select 'test' as did from abc_test_old
> > where did = '5FCAFD34-C124-4E13-AF65-27B675C945CC' limit 1;
> hive> select did from abc_test_12345 limit 1;
> OK
> 5FCAFD34-C124-4E13-AF65-27B675C945CC
> {code}
> result is '5FCAFD34-C124-4E13-AF65-27B675C945CC'
> why result is not 'test'?
> 4.
> {code}
> hive> explain
> > create table abc_test_12345 as
> > select 'test' as did from abc_test_old
> > where did = '5FCAFD34-C124-4E13-AF65-27B675C945CC' limit 1;
> OK
> STAGE DEPENDENCIES:
> Stage-1 is a root stage
> Stage-6 depends on stages: Stage-1 , consists of Stage-3, Stage-2, Stage-4
> Stage-3
> Stage-0 depends on stages: Stage-3, Stage-2, Stage-5
> Stage-7 depends on stages: Stage-0
> Stage-2
> Stage-4
> Stage-5 depends on stages: Stage-4
> STAGE PLANS:
> Stage: Stage-1
> Map Reduce
> Map Operator Tree:
> TableScan
> alias: abc_test_old
> Statistics: Num rows: 32 Data size: 1152 Basic stats: COMPLETE
> Column stats: NONE
> Filter Operator
> predicate: (did = '5FCAFD34-C124-4E13-AF65-27B675C945CC')
> (type: boolean)
> Statistics: Num rows: 16 Data size: 576 Basic stats: COMPLETE
> Column stats: NONE
> Select Operator
> Statistics: Num rows: 16 Data size: 576 Basic stats: COMPLETE
> Column stats: NONE
> Limit
> Number of rows: 1
> Statistics: Num rows: 1 Data size: 36 Basic stats: COMPLETE
> Column stats: NONE
> Reduce Output Operator
> sort order:
> Statistics: Num rows: 1 Data size: 36 Basic stats:
> COMPLETE Column stats: NONE
> Reduce Operator Tree:
> Select Operator
> expressions: '5FCAFD34-C124-4E13-AF65-27B675C945CC' (type: string)
> outputColumnNames: _col0
> Statistics: Num rows: 1 Data size: 36 Basic stats: COMPLETE Column
> stats: NONE
> Limit
> Number of rows: 1
> Statistics: Num rows: 1 Data size: 36 Basic stats: COMPLETE
> Column stats: NONE
> File Output Operator
> compressed: true
> Statistics: Num rows: 1 Data size: 36 Basic stats: COMPLETE
> Column stats: NONE
> table:
> input format:
> org.apache.hadoop.hive.ql.io.orc.OrcInputFormat
> output format:
> org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat
> serde: org.apache.hadoop.hive.ql.io.orc.OrcSerde
> name: default.abc_test_12345
> ......
> {code}
> why expressions is '5FCAFD34-C124-4E13-AF65-27B675C945CC'
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