[jira] [Created] (CALCITE-3310) Approximate and exact aggregate calls are recognized as the same during sql-to-rel conversion

["Danny Chan (Jira)" <ji...@apache.org>]

Danny Chan created CALCITE-3310:
-----------------------------------

             Summary: Approximate and exact aggregate calls are recognized as the same during sql-to-rel conversion
                 Key: CALCITE-3310
                 URL: https://issues.apache.org/jira/browse/CALCITE-3310
             Project: Calcite
          Issue Type: Bug
          Components: core
    Affects Versions: 1.20.0
            Reporter: Danny Chan
            Assignee: Danny Chan
             Fix For: 1.21.0


For sql:
{code:sql}
SELECT empno, count(distinct ename)
approx_count_distinct(ename)
FROM emp
GROUP BY empno
{code}
After sql-to-rel conversion, the plan is:
{code:sql}
LogicalProject(EMPNO=[$0], EXPR$1=[$1], EXPR$2=[$1])
  LogicalAggregate(group=[{0}], EXPR$1=[COUNT(DISTINCT $1)])
    LogicalProject(EMPNO=[$0], ENAME=[$1])
      LogicalTableScan(table=[[CATALOG, SALES, EMP]])
{code}




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