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From "Khurram Faraaz (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-3664) CAST integer zero , one to boolean false , true
Date Thu, 08 Oct 2015 17:59:26 GMT

     [ https://issues.apache.org/jira/browse/DRILL-3664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Khurram Faraaz updated DRILL-3664:
----------------------------------
    Fix Version/s:     (was: Future)
                   1.3.0

> CAST integer zero , one to boolean false , true
> -----------------------------------------------
>
>                 Key: DRILL-3664
>                 URL: https://issues.apache.org/jira/browse/DRILL-3664
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: SQL Parser
>    Affects Versions: 1.2.0
>            Reporter: Khurram Faraaz
>             Fix For: 1.3.0
>
>
> We should be able to cast (zero) 0 to false and (one) 1 to true, currently we report
a parse error when an explicit cast is used in query.
> col7 is of type Boolean in the below input parquet file.
> {code}
> 0: jdbc:drill:schema=dfs.tmp> select col7 from FEWRWSPQQ_101 where col7 IN (cast(0
as boolean),cast(1 as boolean));
> Error: PARSE ERROR: From line 1, column 47 to line 1, column 64: Cast function cannot
convert value of type INTEGER to type BOOLEAN
> [Error Id: d751945f-8a0f-4369-ae9e-c42504f6d978 on centos-04.qa.lab:31010] (state=,code=0)
> {code}
> Without explicit cast we see SchemaChangeException.
> {code}
> 0: jdbc:drill:schema=dfs.tmp> select col7 from FEWRWSPQQ_101 where col7 IN (0,1);
> Error: SYSTEM ERROR: SchemaChangeException: Failure while trying to materialize incoming
schema.  Errors:
>  
> Error in expression at index -1.  Error: Missing function implementation: [castINT(BIT-OPTIONAL)].
 Full expression: --UNKNOWN EXPRESSION--.
> Error in expression at index -1.  Error: Missing function implementation: [castINT(BIT-OPTIONAL)].
 Full expression: --UNKNOWN EXPRESSION--..
> Fragment 0:0
> [Error Id: ecf51dae-62c5-40d7-b0f5-3b9bf9fd3377 on centos-04.qa.lab:31010] (state=,code=0)
> {code}
> Postgres results for the same query.
> {code}
> postgres=# select col7 from FEWRWSPQQ_101 where col7 IN (cast(0 as boolean),cast(1 as
boolean));
>  col7 
> ------
>  f
>  t
>  f
>  t
>  f
>  t
>  f
>  t
>  f
>  t
>  f
>  t
>  f
>  t
>  f
>  t
>  f
>  t
>  f
>  t
>  f
>  t
> (22 rows)
> {code}



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