[jira] [Assigned] (CALCITE-4321) Filter Where Expressions Missing From JDBC SQL

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

     [ https://issues.apache.org/jira/browse/CALCITE-4321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde reassigned CALCITE-4321:
------------------------------------

    Assignee: Julian Hyde

> Filter Where Expressions Missing From JDBC SQL
> ----------------------------------------------
>
>                 Key: CALCITE-4321
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4321
>             Project: Calcite
>          Issue Type: Bug
>         Environment: MacOS 10.15, Java 11, PostgreSQL 12
>            Reporter: Jeremiah Rhoads Hall
>            Assignee: Julian Hyde
>            Priority: Major
>
> Hi there. I tried out the pivot feature added in https://issues.apache.org/jira/browse/CALCITE-3752 and found what I think is a bug where the JDBC adapter will not generate `FILTER (WHERE ...)` expressions from relational expressions.
> Initially, I noticed that the SQL that was generated when trying out the pivot featue was missing the filter-where, but even when included directly in the Calcite SQL it's not in the SQL issued by the JDBC adapter.
> For example if I try to execute the following with Calcite:
> {code:java}
> select sum(amount) filter (where some_date_column = '2020-10-01') from my_table{code}
> The SQL issued by the adapter will be:
> {code:java}
> select sum(amount) from my_table
> {code}
> I have a small change here with a test case and a fix: https://github.com/apache/calcite/pull/2204



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