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Posted to issues@calcite.apache.org by "Danny Chan (JIRA)" <ji...@apache.org> on 2019/06/26 02:03:00 UTC

[jira] [Assigned] (CALCITE-3128) Joining two tables producing only NULLs will return 0 rows

     [ https://issues.apache.org/jira/browse/CALCITE-3128?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Danny Chan reassigned CALCITE-3128:
-----------------------------------

    Assignee: Danny Chan

> Joining two tables producing only NULLs will return 0 rows
> ----------------------------------------------------------
>
>                 Key: CALCITE-3128
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3128
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.20.0
>            Reporter: Muhammad Gelbana
>            Assignee: Danny Chan
>            Priority: Major
>
> The following queries will return 0 rows while they're expected to ruturn rows with NULLs in them.
> {code:sql}
> SELECT *
> FROM (SELECT NULLIF(5, 5)) a, (SELECT NULLIF(5, 5)) b
> {code}
> {code:sql}
> SELECT *
> FROM (VALUES (NULLIF(5, 5)), (NULLIF(5, 5))) a, (VALUES (NULLIF(5, 5)), (NULLIF(5, 5))) b
> {code}



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