You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@drill.apache.org by "Khurram Faraaz (JIRA)" <ji...@apache.org> on 2016/10/10 14:25:20 UTC
[jira] [Created] (DRILL-4939) to_date function returns incorrect
result
Khurram Faraaz created DRILL-4939:
-------------------------------------
Summary: to_date function returns incorrect result
Key: DRILL-4939
URL: https://issues.apache.org/jira/browse/DRILL-4939
Project: Apache Drill
Issue Type: Bug
Components: Execution - Data Types
Affects Versions: 1.9.0
Reporter: Khurram Faraaz
Priority: Critical
to_date function returns wrong result
correct results from Postgres
{noformat}
postgres=# values(to_date('2016-09-22','yyyy-mm-dd'));
column1
------------
2016-09-22
(1 row)
{noformat}
wrong results returned by Drill 1.9.0 git commit id: 4edabe7a
{noformat}
: jdbc:drill:schema=dfs.tmp> values(to_date('2016-09-22','yyyy-mm-dd'));
+-------------+
| EXPR$0 |
+-------------+
| 2016-01-22 |
+-------------+
1 row selected (0.125 seconds)
{noformat}
Postgres 9.3 returns true for below query whereas drill 1.9.0 returns false.
{noformat}
0: jdbc:drill:schema=dfs.tmp> select (res1 = to_date('2016-09-22','yyyy-mm-dd')) res2
. . . . . . . . . . . . . . > from
. . . . . . . . . . . . . . > (
. . . . . . . . . . . . . . > select (case when (false) then null else cast('2016/09/22' as date) end) res1
. . . . . . . . . . . . . . > from (values(1)) foo
. . . . . . . . . . . . . . > ) foobar;
+--------+
| res2 |
+--------+
| false |
+--------+
1 row selected (0.146 seconds)
postgres=# select (res1 = to_date('2016/09/22','yyyy-mm-dd')) res2
postgres-# from
postgres-# (
postgres(# select (case when (false) then null else cast('2016/09/22' as date) end) res1
postgres(# from (values(1)) foo
postgres(# ) foobar;
res2
------
t
(1 row)
{noformat}
Postgres 9.3 returns an error for below query, where as Drill git commit ID: 4edabe7a returns some results.
This looks like it has to do with the to_date function in drill.
{noformat}
0: jdbc:drill:schema=dfs.tmp> select (res1 = to_date(2016/09/22)) res2
. . . . . . . . . . . . . . > from
. . . . . . . . . . . . . . > (
. . . . . . . . . . . . . . > select (case when (false) then null else cast('2016/09/22' as date) end) res1
. . . . . . . . . . . . . . > from (values(1)) foo
. . . . . . . . . . . . . . > ) foobar;
+--------+
| res2 |
+--------+
| false |
+--------+
1 row selected (0.166 seconds)
{noformat}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)