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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KYLIN-3700) Quote sql identities when creating flat table
Date Mon, 26 Nov 2018 17:14:00 GMT

    [ https://issues.apache.org/jira/browse/KYLIN-3700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16699311#comment-16699311
] 

ASF GitHub Bot commented on KYLIN-3700:
---------------------------------------

asfgit commented on issue #362: KYLIN-3700 Quote sql identities when creating flat table
URL: https://github.com/apache/kylin/pull/362#issuecomment-441720391
 
 
   Can one of the admins verify this patch?

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> Quote sql identities when creating flat table
> ---------------------------------------------
>
>                 Key: KYLIN-3700
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3700
>             Project: Kylin
>          Issue Type: Improvement
>          Components: RDBMS Source
>    Affects Versions: v2.5.1
>            Reporter: XiaoXiang Yu
>            Assignee: XiaoXiang Yu
>            Priority: Major
>             Fix For: v2.6.0
>
>
> *When kyin operate with different data source, DDL/DML may be broken because datasource
has some different specific reserved keyword.* 
>  
> Sql identity should be quoted when:
> 1) Create flat table.
> 2) Push down to different datasource (different RDBMS has different reserved keyword)
.
>  
> {code:java}
> 2018-10-05 03:05:04,143 ERROR [pool-25-thread-2] conv.SqlConverter : Failed to default
convert sql, will use the input: SELECT COUNT(TIME_KEY), TIME_KEY FROM CUBE.OPERATIONS_TIME
WHERE TIME_KEY IS NOT NULL GROUP BY TIME_KEY ORDER BY COUNT(TIME_KEY) DESC LIMIT 10
> org.apache.calcite.sql.parser.SqlParseException: Encountered "FROM CUBE" at line 1, column
34.
> Was expecting one of:
>  <EOF> 
>  "ORDER" ...
>  "LIMIT" ...
>  "OFFSET" ...
>  "FETCH" ...
>  "FROM" <IDENTIFIER> ...
>  "FROM" <QUOTED_IDENTIFIER> ...
>  "FROM" <BACK_QUOTED_IDENTIFIER> ...
>  "FROM" <BRACKET_QUOTED_IDENTIFIER> ...
>  "FROM" <UNICODE_QUOTED_IDENTIFIER> ...
>  "FROM" "LATERAL" ...
>  "FROM" "(" ...
>  "FROM" "UNNEST" ...
>  "FROM" "TABLE" ...
>  "," ...
>  "AS" ...
>  <IDENTIFIER> ...
>  <QUOTED_IDENTIFIER> ...
>  <BACK_QUOTED_IDENTIFIER> ...
>  <BRACKET_QUOTED_IDENTIFIER> ...
>  <UNICODE_QUOTED_IDENTIFIER> ...
>  "." ...
>  "INTERSECT" ...
>  "EXCEPT" ...
>  "MINUS" ...
>  "(" ...
>  
>  at org.apache.calcite.sql.parser.impl.SqlParserImpl.convertException(SqlParserImpl.java:349)
>  at org.apache.calcite.sql.parser.impl.SqlParserImpl.normalizeException(SqlParserImpl.java:130){code}



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