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Posted to issues@calcite.apache.org by "Wang Yanlin (Jira)" <ji...@apache.org> on 2020/11/03 08:40:00 UTC

[jira] [Updated] (CALCITE-4374) Support materialized view recognition when query distinct aggregate on target GROUP BY column

     [ https://issues.apache.org/jira/browse/CALCITE-4374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wang Yanlin updated CALCITE-4374:
---------------------------------
    Description: 
When query distinct aggregate on the column, which is in the group by list of target.
Ma
{noformat}
@Test void testQueryDistinctColumnInTargetGroupByList() {
    final String mv = ""
        + "select \"name\", \"deptno\" as cnt "
        + "from \"emps\" group by \"name\", \"deptno\"";
    final String query = ""
        + "select \"name\", count(distinct \"deptno\")\n"
        + "from \"emps\" group by \"name\"";
    sql(mv, query).ok();
  }
{noformat}

> Support materialized view recognition when query distinct aggregate on target GROUP BY column
> ---------------------------------------------------------------------------------------------
>
>                 Key: CALCITE-4374
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4374
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: Wang Yanlin
>            Priority: Major
>
> When query distinct aggregate on the column, which is in the group by list of target.
> Ma
> {noformat}
> @Test void testQueryDistinctColumnInTargetGroupByList() {
>     final String mv = ""
>         + "select \"name\", \"deptno\" as cnt "
>         + "from \"emps\" group by \"name\", \"deptno\"";
>     final String query = ""
>         + "select \"name\", count(distinct \"deptno\")\n"
>         + "from \"emps\" group by \"name\"";
>     sql(mv, query).ok();
>   }
> {noformat}



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