[jira] [Commented] (CALCITE-3456) AssertionError throws when aggregation same digest in subquery in different scope

["Julian Hyde (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-3456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16968637#comment-16968637 ] 

Julian Hyde commented on CALCITE-3456:
--------------------------------------

[~Sharpshow], Could this problem be solved if we used an IdentityHashMap? Just an idea.

> AssertionError throws when aggregation same digest in subquery in different scope
> ---------------------------------------------------------------------------------
>
>                 Key: CALCITE-3456
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3456
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.21.0
>            Reporter: Danny Chen
>            Assignee: Danny Chen
>            Priority: Major
>             Fix For: 1.22.0
>
>
> Check this sql in SqlToRelConverterTest:
> {code:java}
> @Test public void testAggregateWithCaseWhen() {
>     final String sql = "select\n"
>         + "  CASE WHEN job IN ('810000', '820000') THEN job\n"
>         + "   ELSE 'error'\n"
>         + "  END AS id,\n"
>         + "  count(empno)\n"
>         + "FROM emp\n"
>         + "where job <> '' or job in ('810000', '820000')\n"
>         + "GROUP by deptno, job";
>     sql(sql).ok();
>   }
> {code}
> I tested PostgreSQL 9.6 and MySQL 5.6, this is a valid SQL and they both outputs the right result.



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