LuciferYang commented on a change in pull request #29711:
URL: https://github.com/apache/spark/pull/29711#discussion_r488543333
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File path:
sql/core/src/test/resources/tpcds-plan-stability/approved-plans-v1_4/q19.sf100/simplified.txt
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@@ -13,12 +13,16 @@ TakeOrderedAndProject
[ext_price,brand,brand_id,i_manufact_id,i_manufact]
InputAdapter
Exchange [ss_customer_sk] #2
WholeStageCodegen (4)
- Project
[i_brand_id,i_brand,i_manufact_id,i_manufact,ss_customer_sk,ss_ext_sales_price,s_zip]
+ Project
[ss_customer_sk,ss_ext_sales_price,i_brand_id,i_brand,i_manufact_id,i_manufact,s_zip]
Review comment:
https://github.com/apache/spark/blob/99384d1e831b7fe82a3a80ade1da976971624ee7/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/CostBasedJoinReorder.scala#L298-L308
Project node add by above code part in `JoinReorderDP#buildJoin` method, I
think the Project output order decided by join order
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