[jira] [Updated] (CALCITE-1618) Permutation method should consider CAST a complex expression

["Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-1618?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesus Camacho Rodriguez updated CALCITE-1618:
---------------------------------------------
    Summary: Permutation method should consider CAST a complex expression  (was: SortProjectTransposeRule ignores CAST in the Project operator)

> Permutation method should consider CAST a complex expression
> ------------------------------------------------------------
>
>                 Key: CALCITE-1618
>                 URL: https://issues.apache.org/jira/browse/CALCITE-1618
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.11.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>             Fix For: 1.12.0
>
>
> For instance:
> {noformat}
> ...
> HiveSortLimit(sort0=$4,sort1=$2,dir0=ASC-nulls-first,dir1=DESC-nulls-last,fetch=10)
>   HiveProject(robot=$0,_o__c1=$2,m=$3,s=$4,(tok_function tok_int (tok_table_or_col robot))=CAST($0):INTEGER))
> ...
> {noformat}
> will be transformed into:
> {noformat}
> ...
> HiveProject(robot=$0,_o__c1=$2,m=$3,s=$4,(tok_function tok_int (tok_table_or_col robot))=CAST($0):INTEGER))
>   HiveSortLimit(sort0=$0,sort1=$2,dir0=ASC-nulls-first,dir1=DESC-nulls-last,fetch=10)
> ...
> {noformat}
> which is incorrect.
> The problem seems to be in the _permutation_ method in RelOptUtil, which is called in L87. The method actually considers a CAST on a reference as a valid column permutation of the column referenced; probably it should not.
> _permutation_ is only called by this rule and UnionPullUpConstantsRule, thus it seems it is safe to fix the semantics of the method.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)