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From "Taras Ledkov (Jira)" <j...@apache.org>
Subject [jira] [Updated] (IGNITE-14810) Calcite. Simple JOIN with f1=f2 cannot be planned with CNLJ.
Date Tue, 01 Jun 2021 14:39:00 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-14810?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Taras Ledkov updated IGNITE-14810:
----------------------------------
    Description: 
For now simple JOIN requests like:

{noformat}
SELECT * FROM integers FULL OUTER JOIN integers2 ON integers.i=integers2.k ORDER BY i
{noformat}

can be planned only through MergeJoin or NestedLoopJoin it would be useful to extend it with
CNLJ too. Starting point : {{FilterSpoolMergeToSortedIndexSpoolRule#onMatch}}

We have to add new rule {{FilterSpoolMergeToSortedIndexSpoolRule_ForceCollation}} which forces
collation by the filter condition. 


  was:
For now simple JOIN requests like:

{noformat}
SELECT * FROM integers FULL OUTER JOIN integers2 ON integers.i=integers2.k ORDER BY i
{noformat}

can be planned only through MergeJoin or NestedLoopJoin it would be useful to extend it with
CNLJ too. Starting point : FilterSpoolMergeToSortedIndexSpoolRule#onMatch



> Calcite. Simple JOIN with f1=f2 cannot be planned with CNLJ.
> ------------------------------------------------------------
>
>                 Key: IGNITE-14810
>                 URL: https://issues.apache.org/jira/browse/IGNITE-14810
>             Project: Ignite
>          Issue Type: Improvement
>          Components: sql
>            Reporter: Stanilovsky Evgeny
>            Priority: Major
>              Labels: calcite
>
> For now simple JOIN requests like:
> {noformat}
> SELECT * FROM integers FULL OUTER JOIN integers2 ON integers.i=integers2.k ORDER BY i
> {noformat}
> can be planned only through MergeJoin or NestedLoopJoin it would be useful to extend
it with CNLJ too. Starting point : {{FilterSpoolMergeToSortedIndexSpoolRule#onMatch}}
> We have to add new rule {{FilterSpoolMergeToSortedIndexSpoolRule_ForceCollation}} which
forces collation by the filter condition. 



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