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https://issues.apache.org/jira/browse/HIVE-13945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15352227#comment-15352227
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Sergey Shelukhin edited comment on HIVE-13945 at 6/28/16 2:28 AM:
------------------------------------------------------------------
First batch of out file updates.
I didn't look at TestBeeLineWithArgs which is broken.
Added new test decimal_divide; it appears that precision for int/decimal
division is chosen such that the results are rounded from what it was with
double. Need to look into that.
vector_struct_in and orc_ppd_basic are tests that have suspicious diffs, need
to investigate further.
Another interesting effect - where previously float-op-literal arithmetic would
be double (being float-op-double), now it's float-op-decimal, which resolves to
float result; that can affect precision.
was (Author: sershe):
First batch of out file updates.
I didn't look at TestBeeLineWithArgs which is broken.
Added new test decimal_divide; it appears that precision for int/decimal
division is chosen such that the results are rounded from what it was with
double. Need to look into that.
vector_struct_in and orc_ppd_basic are tests that have suspicious diffs, need
to investigate further.
TestBeeLineWithArgs straight up fails, need to look.
Another interesting effect - where previously float-op-literal arithmetic would
be double (being float-op-double), now it's float-op-decimal, which resolves to
float result; that can affect precision.
> Decimal value is displayed as rounded when selecting where clause with that
> decimal value.
> ------------------------------------------------------------------------------------------
>
> Key: HIVE-13945
> URL: https://issues.apache.org/jira/browse/HIVE-13945
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.1.0
> Reporter: Takahiko Saito
> Assignee: Sergey Shelukhin
> Priority: Critical
> Attachments: HIVE-13945.01.patch, HIVE-13945.02.patch,
> HIVE-13945.patch
>
>
> Create a table withe a column of decimal type(38,18) and insert
> '4327269606205.029297'. Then select with that value displays its rounded
> value, which is 4327269606205.029300000000000000
> {noformat}
> 0: jdbc:hive2://os-r7-mvjkcu-hiveserver2-11-4> drop table if exists test;
> No rows affected (0.229 seconds)
> 0: jdbc:hive2://os-r7-mvjkcu-hiveserver2-11-4>
> 0: jdbc:hive2://os-r7-mvjkcu-hiveserver2-11-4> create table test (dc
> decimal(38,18));
> No rows affected (0.125 seconds)
> 0: jdbc:hive2://os-r7-mvjkcu-hiveserver2-11-4>
> 0: jdbc:hive2://os-r7-mvjkcu-hiveserver2-11-4> insert into table test values
> (4327269606205.029297);
> No rows affected (2.372 seconds)
> 0: jdbc:hive2://os-r7-mvjkcu-hiveserver2-11-4>
> 0: jdbc:hive2://os-r7-mvjkcu-hiveserver2-11-4> select * from test;
> +-----------------------------------+--+
> | test.dc |
> +-----------------------------------+--+
> | 4327269606205.029297000000000000 |
> +-----------------------------------+--+
> 1 row selected (0.123 seconds)
> 0: jdbc:hive2://os-r7-mvjkcu-hiveserver2-11-4>
> 0: jdbc:hive2://os-r7-mvjkcu-hiveserver2-11-4> select * from test where dc =
> 4327269606205.029297000000000000;
> +-----------------------------------+--+
> | test.dc |
> +-----------------------------------+--+
> | 4327269606205.029300000000000000 |
> +-----------------------------------+--+
> 1 row selected (0.109 seconds)
> {noformat}
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