[ 
https://issues.apache.org/jira/browse/CALCITE-2189?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez resolved CALCITE-2189.
----------------------------------------------
    Resolution: Fixed

Fixed in http://git-wip-us.apache.org/repos/asf/calcite/commit/47c49c9 .

> RelMdAllPredicates fast bail out creates mismatch with RelMdTableReferences
> ---------------------------------------------------------------------------
>
>                 Key: CALCITE-2189
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2189
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>            Priority: Major
>             Fix For: 1.16.0
>
>
> The idea behind the metadata providers introduced in CALCITE-1682 is that we 
> can identify the lineage of the expressions. If we bypass assigning a unique 
> identifier for the table in RelMdAllPredicates because there are no 
> predicates on those tables, then we will end up referencing wrong tables.
> E.g.
> {code}
> select x.sal from
> (select a.deptno, c.sal from (select * from emp limit 7) as a
> cross join (select * from dept limit 1) as b
> cross join (select * from emp where empno = 5 limit 2) as c) as x;
> {code}
> Table refs: {{[[CATALOG, SALES, DEPT].#0, [CATALOG, SALES, EMP].#0, [CATALOG, 
> SALES, EMP].#1]}}
> Extracted predicate without fix (wrong): {{=([CATALOG, SALES, EMP].#0.$0, 5)}}
> Extracted predicate with fix (correct): {{=([CATALOG, SALES, EMP].#1.$0, 5)}}



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Reply via email to