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Posted to issues@hive.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2016/01/06 20:06:39 UTC
[jira] [Commented] (HIVE-12749) Constant propagate returns string
values in incorrect format
[ https://issues.apache.org/jira/browse/HIVE-12749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15086081#comment-15086081 ]
Sergey Shelukhin commented on HIVE-12749:
-----------------------------------------
[~ashutoshc] can you take a look?
> Constant propagate returns string values in incorrect format
> ------------------------------------------------------------
>
> Key: HIVE-12749
> URL: https://issues.apache.org/jira/browse/HIVE-12749
> Project: Hive
> Issue Type: Bug
> Affects Versions: 1.0.0, 1.2.0
> Reporter: Oleksiy Sayankin
> Assignee: Oleksiy Sayankin
> Fix For: 2.0.0
>
>
> h2. STEP 1. Create and upload test data
> Execute in command line:
> {noformat}
> nano stest.data
> {noformat}
> Add to file:
> {noformat}
> 000126,000777
> 000126,000778
> 000126,000779
> 000474,000888
> 000468,000889
> 000272,000880
> {noformat}
> {noformat}
> hadoop fs -put stest.data /
> {noformat}
> {noformat}
> hive> create table stest(x STRING, y STRING) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',';
> hive> LOAD DATA INPATH '/stest.data' OVERWRITE INTO TABLE stest;
> {noformat}
> h2. STEP 2. Execute test query (with cast for x)
> {noformat}
> select x from stest where cast(x as int) = 126;
> {noformat}
> EXPECTED RESULT:
> {noformat}
> 000126
> 000126
> 000126
> {noformat}
> ACTUAL RESULT:
> {noformat}
> 126
> 126
> 126
> {noformat}
> h2. STEP 3. Execute test query (no cast for x)
> {noformat}
> hive> select x from stest where x = 126;
> {noformat}
> EXPECTED RESULT:
> {noformat}
> 000126
> 000126
> 000126
> {noformat}
> ACTUAL RESULT:
> {noformat}
> 126
> 126
> 126
> {noformat}
> In steps #2, #3 I expected '000126' because the origin type of x is STRING in stest table.
> Note, setting hive.optimize.constant.propagation=false fixes the issue.
> {noformat}
> hive> set hive.optimize.constant.propagation=false;
> hive> select x from stest where x = 126;
> OK
> 000126
> 000126
> 000126
> {noformat}
> Related to HIVE-11104, HIVE-8555
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