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https://issues.apache.org/jira/browse/TAJO-956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14067915#comment-14067915
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Hudson commented on TAJO-956:
-----------------------------
SUCCESS: Integrated in Tajo-master-build #304 (See
[https://builds.apache.org/job/Tajo-master-build/304/])
TAJO-956: CONCAT should be support multiple params and null param. (Hyoungjun
Kim via hyunsik) (hyunsik: rev 06935b392ce40264ae41e6486e5737f8c5c0593b)
*
tajo-core/src/test/java/org/apache/tajo/engine/function/TestStringOperatorsAndFunctions.java
* tajo-core/src/main/java/org/apache/tajo/engine/function/string/Concat_ws.java
* tajo-core/src/main/java/org/apache/tajo/engine/function/string/Concat.java
* CHANGES
> CONCAT should be support multiple params and null param.
> --------------------------------------------------------
>
> Key: TAJO-956
> URL: https://issues.apache.org/jira/browse/TAJO-956
> Project: Tajo
> Issue Type: Improvement
> Reporter: Hyoungjun Kim
> Assignee: Hyoungjun Kim
> Priority: Trivial
> Fix For: 0.9.0
>
>
> Currently Tajo's CONCAT function doesn't support multiple parameters and null
> parameter.
> {noformat}
> default> select concat('aaa', 'bbb', 'ccc');
> ERROR: function concat(text,text,text) does not exist
> default>
> {noformat}
> CONCAT function can be defined as follows.
> {noformat}
> default> select concat(null, 'aaa', null, 'bbb', 'ccc');
> concat
> --------
> aaabbbccc
> {noformat}
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