[jira] [Comment Edited] (CALCITE-4215) Ensure org.apache.calcite.schema.Statistic uses null vs emptyList appropriately

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

    [ https://issues.apache.org/jira/browse/CALCITE-4215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17189895#comment-17189895 ] 

Danny Chen edited comment on CALCITE-4215 at 9/3/20, 7:35 AM:
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Like Flink do, what about -1, because row count expect to be positive, -1 means *unknown*.

Oops, the latest code changes to {{1E8}} in order to avoid broadcast join.


was (Author: danny0405):
Like Flink do, what about -1, because row count expect to be positive, -1 means *unknown*.

> Ensure org.apache.calcite.schema.Statistic uses null vs emptyList appropriately
> -------------------------------------------------------------------------------
>
>                 Key: CALCITE-4215
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4215
>             Project: Calcite
>          Issue Type: Sub-task
>          Components: core
>    Affects Versions: 1.25.0
>            Reporter: Vladimir Sitnikov
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> null: statistic is *not* *known*
> emptyList: statistic is *known*, and the value is *empty* (e.g. no unique keys in the table)



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