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Posted to issues@drill.apache.org by "Mehant Baid (JIRA)" <ji...@apache.org> on 2015/04/15 22:34:59 UTC
[jira] [Updated] (DRILL-2356) Wrong result when ROUND function is
used in expression
[ https://issues.apache.org/jira/browse/DRILL-2356?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mehant Baid updated DRILL-2356:
-------------------------------
Attachment: DRILL-2356.patch
> Wrong result when ROUND function is used in expression
> ------------------------------------------------------
>
> Key: DRILL-2356
> URL: https://issues.apache.org/jira/browse/DRILL-2356
> Project: Apache Drill
> Issue Type: Bug
> Components: Functions - Drill
> Affects Versions: 0.8.0
> Reporter: Victoria Markman
> Assignee: Mehant Baid
> Priority: Critical
> Fix For: 0.9.0
>
> Attachments: DRILL-2356.patch, alltypes_with_nulls
>
>
> Observe overflow in the expression SUM(ROUND ...)):
> {code}
> 0: jdbc:drill:schema=dfs> select
> . . . . . . . . . . . . > sum(c_bigint) as sum_c_bigint,
> . . . . . . . . . . . . > sum(ROUND(c_bigint/12))
> . . . . . . . . . . . . > from
> . . . . . . . . . . . . > alltypes_with_nulls
> . . . . . . . . . . . . > group by
> . . . . . . . . . . . . > c_varchar,
> . . . . . . . . . . . . > c_integer,
> . . . . . . . . . . . . > c_date,
> . . . . . . . . . . . . > c_time,
> . . . . . . . . . . . . > c_boolean;
> +--------------+------------+
> | sum_c_bigint | EXPR$1 |
> +--------------+------------+
> | -3477884857818808320 | -2147483648 |
> | 0 | 0 |
> | 0 | 0 |
> | 4465148082249531392 | 2147483647 |
> | 4465148082249531392 | 2147483647 |
> | -3999734748766273536 | -2147483648 |
> | 0 | 0 |
> | -449093763428515840 | -2147483648 |
> | -1825551161692782592 | -2147483648 |
> | -7308685202664980480 | -2147483648 |
> | -6772904422084182016 | -2147483648 |
> ...
> ...
> {code}
> Wrapping ROUND around SUM, produces incorrect result as well:
> {code}
> 0: jdbc:drill:schema=dfs> select
> . . . . . . . . . . . . > sum(c_bigint) as sum_c_bigint,
> . . . . . . . . . . . . > ROUND(sum(c_bigint/12))
> . . . . . . . . . . . . > from
> . . . . . . . . . . . . > alltypes_with_nulls
> . . . . . . . . . . . . > group by
> . . . . . . . . . . . . > c_varchar,
> . . . . . . . . . . . . > c_integer,
> . . . . . . . . . . . . > c_date,
> . . . . . . . . . . . . > c_time,
> . . . . . . . . . . . . > c_boolean;
> +--------------+------------+
> | sum_c_bigint | EXPR$1 |
> +--------------+------------+
> | -3477884857818808320 | -2147483648 |
> | 0 | 0 |
> | 0 | 0 |
> | 4465148082249531392 | 2147483647 |
> | 4465148082249531392 | 2147483647 |
> | -3999734748766273536 | -2147483648 |
> | 0 | 0 |
> | -449093763428515840 | -2147483648 |
> | -1825551161692782592 | -2147483648 |
> | -7308685202664980480 | -2147483648 |
> | -6772904422084182016 | -2147483648 |
> ...
> ...
> {code}
> If you remove ROUND function, you get correct result:
> {code}
> 0: jdbc:drill:schema=dfs> select
> . . . . . . . . . . . . > sum(c_bigint) as sum_c_bigint,
> . . . . . . . . . . . . > sum(c_bigint/12)
> . . . . . . . . . . . . > from
> . . . . . . . . . . . . > alltypes_with_nulls
> . . . . . . . . . . . . > group by
> . . . . . . . . . . . . > c_varchar,
> . . . . . . . . . . . . > c_integer,
> . . . . . . . . . . . . > c_date,
> . . . . . . . . . . . . > c_time,
> . . . . . . . . . . . . > c_boolean;
> +--------------+------------+
> | sum_c_bigint | EXPR$1 |
> +--------------+------------+
> | -3477884857818808320 | -289823738151567360 |
> | 0 | 0 |
> | 0 | 0 |
> | 4465148082249531392 | 372095673520794282 |
> | 4465148082249531392 | 372095673520794282 |
> | -3999734748766273536 | -333311229063856128 |
> | 0 | 0 |
> ...
> ...
> {code}
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