[jira] [Issue Comment Deleted] (CALCITE-883) Support RESPECT NULLS, IGNORE NULLS option for LEAD, LAG, FIRST_VALUE, LAST_VALUE window functions

["Hongze Zhang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hongze Zhang updated CALCITE-883:
---------------------------------
    Comment: was deleted

(was: {quote}with my understanding the first operand of RexOver may become a "NULL TREATMENT" operator rather than an aggregate operator causing some "if ...else..." and it seems ugly{quote}

If you want to make the SqlNode of null treatment optional, I think the call should be the last operand but not the first one.)

> Support RESPECT NULLS, IGNORE NULLS option for LEAD, LAG, FIRST_VALUE, LAST_VALUE window functions
> --------------------------------------------------------------------------------------------------
>
>                 Key: CALCITE-883
>                 URL: https://issues.apache.org/jira/browse/CALCITE-883
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>            Reporter: Sean Hsuan-Yi Chu
>            Assignee: Chunwei Lei
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> This issue was brought up in Drill community: (https://issues.apache.org/jira/browse/DRILL-3597)
> For convenience, I copied and pasted the reporter Khurram Faraaz's description here:
> "The SQL standard defines a RESPECT NULLS or IGNORE NULLS option for lead, lag, first_value, and last_value window functions."
> In Calcite, we should have been able to recognized this option.



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