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Posted to issues@ignite.apache.org by "Roman Kondakov (Jira)" <ji...@apache.org> on 2020/06/01 15:30:00 UTC
[jira] [Updated] (IGNITE-12913) Calcite integration: Add semi join
remove rule to the planner
[ https://issues.apache.org/jira/browse/IGNITE-12913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Roman Kondakov updated IGNITE-12913:
------------------------------------
Priority: Minor (was: Major)
> Calcite integration: Add semi join remove rule to the planner
> -------------------------------------------------------------
>
> Key: IGNITE-12913
> URL: https://issues.apache.org/jira/browse/IGNITE-12913
> Project: Ignite
> Issue Type: Improvement
> Components: sql
> Reporter: Roman Kondakov
> Priority: Minor
>
> We need to add next rules to planner
> * FilterJoinRule,
> * JoinAddRedundantSemiJoinRule,
> * SemiJoinRemoveRule
> In order to be able to make this transformation for the query:
> {noformat}
> "select e.ename from emp e, dept d\n"
> + "where e.deptno = d.deptno"
> BEFORE=
> LogicalProject(ENAME=[$1])
> LogicalFilter(condition=[=($3, $5)])
> LogicalJoin(condition=[true], joinType=[inner])
> IgniteTableScan(table=[[PUBLIC, EMP]])
> IgniteTableScan(table=[[PUBLIC, DEPT]])
> AFTER=
> IgniteProject(ENAME=[$1])
> IgniteJoin(condition=[=($3, $5)], joinType=[inner])
> IgniteTableScan(table=[[PUBLIC, EMP]])
> IgniteTableScan(table=[[PUBLIC, DEPT]])
> {noformat}
>
>
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