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https://issues.apache.org/jira/browse/CALCITE-4210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17197925#comment-17197925
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James Starr commented on CALCITE-4210:
--------------------------------------
[~julianhyde] I reworked createJoinUsing and createJoinNatural to return
conditions instead of the whole rel node, and now createJoinOnCondition returns
a pair of the right node and the condition. I also made the inner class
static.
> Sub Query is 'On' clause does not correctly expand in SqlToRelConverter
> -----------------------------------------------------------------------
>
> Key: CALCITE-4210
> URL: https://issues.apache.org/jira/browse/CALCITE-4210
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: James Starr
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Aggregation is dropped during decorreleation.
> {code:java}
> SELECT "employee"."department_id", "employee"."salary"
> FROM "department"
> LEFT JOIN "employee" ON "employee"."salary" = (
> SELECT max("employee"."salary")
> FROM "employee"
> WHERE "employee"."department_id" = "department"."department_id"
> )
> {code}
> {code:java}
> LogicalProject(department_id=[$9], salary=[$13])
> LogicalJoin(condition=[=($13, $0)], joinType=[left])
> LogicalTableScan(table=[[foodmart, department]])
> LogicalTableScan(table=[[foodmart, employee]]){code}
> This may be related to CALCITE-4206.
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