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https://issues.apache.org/jira/browse/HIVE-11494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14662496#comment-14662496
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Pengcheng Xiong commented on HIVE-11494:
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after the patches in HIVE-11477 and HIVE-11493, in both pos and neg cases,
they will not get rounded off.
> Some positive constant double predicates gets rounded off while negative
> constants are not
> ------------------------------------------------------------------------------------------
>
> Key: HIVE-11494
> URL: https://issues.apache.org/jira/browse/HIVE-11494
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.0.0
> Reporter: Prasanth Jayachandran
> Assignee: Pengcheng Xiong
> Priority: Critical
>
> Check the predicates in filter expression for following queries. It looks
> closely related to HIVE-11477 and HIVE-11493
> {code:title=explain select * from orc_ppd where f = -0.07999999821186066;}
> OK
> Stage-0
> Fetch Operator
> limit:-1
> Select Operator [SEL_2]
>
> outputColumnNames:["_col0","_col1","_col2","_col3","_col4","_col5","_col6","_col7","_col8","_col9","_col10","_col11","_col12","_col13"]
> Filter Operator [FIL_4]
> predicate:(f = -0.07999999821186066) (type: boolean)
> TableScan [TS_0]
> alias:orc_ppd
> {code}
> {code:title=explain select * from orc_ppd where f = 0.07999999821186066;}
> OK
> Stage-0
> Fetch Operator
> limit:-1
> Select Operator [SEL_2]
>
> outputColumnNames:["_col0","_col1","_col2","_col3","_col4","_col5","_col6","_col7","_col8","_col9","_col10","_col11","_col12","_col13"]
> Filter Operator [FIL_4]
> predicate:(f = 0.08) (type: boolean)
> TableScan [TS_0]
> alias:orc_ppd
> {code}
> Negative strings constants gets rounded off.
> {code:title=explain select * from orc_ppd where f = "-0.07999999821186066";}
> OK
> Stage-0
> Fetch Operator
> limit:-1
> Select Operator [SEL_2]
>
> outputColumnNames:["_col0","_col1","_col2","_col3","_col4","_col5","_col6","_col7","_col8","_col9","_col10","_col11","_col12","_col13"]
> Filter Operator [FIL_4]
> predicate:(f = -0.08) (type: boolean)
> TableScan [TS_0]
> alias:orc_ppd
> {code}
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