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Posted to issues@ignite.apache.org by "Taras Ledkov (Jira)" <ji...@apache.org> on 2020/04/20 13:07:00 UTC
[jira] [Assigned] (IGNITE-12912) Calcite integration: Add filters
merge rule to the planner
[ https://issues.apache.org/jira/browse/IGNITE-12912?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Taras Ledkov reassigned IGNITE-12912:
-------------------------------------
Assignee: Taras Ledkov
> Calcite integration: Add filters merge rule to the planner
> ----------------------------------------------------------
>
> Key: IGNITE-12912
> URL: https://issues.apache.org/jira/browse/IGNITE-12912
> Project: Ignite
> Issue Type: Improvement
> Components: sql
> Reporter: Roman Kondakov
> Assignee: Taras Ledkov
> Priority: Major
>
> We need to add next rules to planner
> * FilterMergeRule
> * FilterProjectTransposeRule
> In order to be able to make this transformation for the query:
> {noformat}
> "select name from (\n"
> + " select *\n"
> + " from dept\n"
> + " where deptno = 10)\n"
> + "where deptno = 10\n"
> BEFORE=
> LogicalProject(NAME=[$1])
> LogicalFilter(condition=[=(CAST($0):INTEGER, 10)])
> LogicalProject(DEPTNO=[$0], NAME=[$1])
> LogicalFilter(condition=[=(CAST($0):INTEGER, 10)])
> IgniteTableScan(table=[[PUBLIC, DEPT]])
> AFTER=
> IgniteProject(NAME=[$1])
> IgniteProject(DEPTNO=[$0], NAME=[$1])
> IgniteFilter(condition=[=(CAST($0):INTEGER, 10)])
> IgniteTableScan(table=[[PUBLIC, DEPT]])
> {noformat}
>
>
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