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https://issues.apache.org/jira/browse/CALCITE-7086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-7086:
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Labels: pull-request-available (was: )
> Implement a rule that performs the inverse operation of
> AggregateCaseToFilterRule
> ---------------------------------------------------------------------------------
>
> Key: CALCITE-7086
> URL: https://issues.apache.org/jira/browse/CALCITE-7086
> Project: Calcite
> Issue Type: New Feature
> Reporter: weihua zhang
> Assignee: Silun Dong
> Priority: Major
> Labels: pull-request-available
>
> Many databases do not support the form of filtered aggregates. It would be
> helpful if we could implement a rule to convert the plan into a form that
> most databases can understand.
> in CALCITE-6893:
> {code:sql}
> select * from emp where deptno = 10
> intersect
> select * from emp where deptno = 20
> intersect
> select * from emp where deptno = 30
> {code}
> {noformat}
> LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4],
> SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8])
> LogicalFilter(condition=[AND(>($9, 0), >($10, 0), >($11, 0))])
> LogicalAggregate(group=[{0, 1, 2, 3, 4, 5, 6, 7, 8}], count_i0=[COUNT()
> FILTER $9], count_i1=[COUNT() FILTER $10], count_i2=[COUNT() FILTER $11])
> // <---here
> LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3],
> HIREDATE=[$4], SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8], $f10=[=($9,
> 0)], $f11=[=($9, 1)], $f12=[=($9, 2)])
> LogicalUnion(all=[true])
> LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3],
> HIREDATE=[$4], SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8], i=[0])
> LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3],
> HIREDATE=[$4], SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8])
> LogicalFilter(condition=[=($7, 10)])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]])
> LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3],
> HIREDATE=[$4], SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8], i=[1])
> LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3],
> HIREDATE=[$4], SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8])
> LogicalFilter(condition=[=($7, 20)])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]])
> LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3],
> HIREDATE=[$4], SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8], i=[2])
> LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3],
> HIREDATE=[$4], SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8])
> LogicalFilter(condition=[=($7, 30)])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]])
> {noformat}
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