[jira] [Updated] (SPARK-43025) Eliminate Union if filters have the same child plan

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-43025?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated SPARK-43025:
-----------------------------------
    Labels: pull-request-available  (was: )

> Eliminate Union if filters have the same child plan
> ---------------------------------------------------
>
>                 Key: SPARK-43025
>                 URL: https://issues.apache.org/jira/browse/SPARK-43025
>             Project: Spark
>          Issue Type: New Feature
>          Components: SQL
>    Affects Versions: 3.5.0
>            Reporter: Jiaan Geng
>            Priority: Major
>              Labels: pull-request-available
>
> There are a lot of SQL in user scenarios. Take an example,
> SELECT
>   ss_item_sk,
>   ss_ticket_number,
>   ss_customer_sk
> FROM store_sales
>   LEFT OUTER JOIN store_returns
>     ON (sr_item_sk = ss_item_sk AND sr_ticket_number = ss_ticket_number)
> WHERE sr_return_amt > 10000
> UNION ALL
> SELECT
>   ss_item_sk,
>   ss_ticket_number,
>   ss_customer_sk
> FROM store_sales
>   LEFT OUTER JOIN store_returns
>     ON (sr_item_sk = ss_item_sk AND sr_ticket_number = ss_ticket_number)
> WHERE sr_return_amt < 1000
> We can simplify this SQL as
> SELECT
>   ss_item_sk,
>   ss_ticket_number,
>   ss_customer_sk
> FROM store_sales
>   LEFT OUTER JOIN store_returns
>     ON (sr_item_sk = ss_item_sk AND sr_ticket_number = ss_ticket_number)
> WHERE sr_return_amt > 10000 or sr_return_amt < 1000



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