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https://issues.apache.org/jira/browse/HIVE-14390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15404264#comment-15404264
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Pengcheng Xiong commented on HIVE-14390:
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+1. [~nemon], could u update all the q files in a new patch and upload it?
Thanks.
> Wrong Table alias when CBO is on
> --------------------------------
>
> Key: HIVE-14390
> URL: https://issues.apache.org/jira/browse/HIVE-14390
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Affects Versions: 1.2.1
> Reporter: Nemon Lou
> Assignee: Nemon Lou
> Priority: Minor
> Attachments: HIVE-14390.patch, explain.rar
>
>
> There are 5 web_sales references in query95 of tpcds ,with alias ws1-ws5.
> But the query plan only has ws1 when CBO is on.
> query95 :
> {noformat}
> SELECT count(distinct ws1.ws_order_number) as order_count,
> sum(ws1.ws_ext_ship_cost) as total_shipping_cost,
> sum(ws1.ws_net_profit) as total_net_profit
> FROM web_sales ws1
> JOIN customer_address ca ON (ws1.ws_ship_addr_sk = ca.ca_address_sk)
> JOIN web_site s ON (ws1.ws_web_site_sk = s.web_site_sk)
> JOIN date_dim d ON (ws1.ws_ship_date_sk = d.d_date_sk)
> LEFT SEMI JOIN (SELECT ws2.ws_order_number as ws_order_number
> FROM web_sales ws2 JOIN web_sales ws3
> ON (ws2.ws_order_number = ws3.ws_order_number)
> WHERE ws2.ws_warehouse_sk <>
> ws3.ws_warehouse_sk
> ) ws_wh1
> ON (ws1.ws_order_number = ws_wh1.ws_order_number)
> LEFT SEMI JOIN (SELECT wr_order_number
> FROM web_returns wr
> JOIN (SELECT ws4.ws_order_number as
> ws_order_number
> FROM web_sales ws4 JOIN web_sales
> ws5
> ON (ws4.ws_order_number =
> ws5.ws_order_number)
> WHERE ws4.ws_warehouse_sk <>
> ws5.ws_warehouse_sk
> ) ws_wh2
> ON (wr.wr_order_number =
> ws_wh2.ws_order_number)) tmp1
> ON (ws1.ws_order_number = tmp1.wr_order_number)
> WHERE d.d_date between '2002-05-01' and '2002-06-30' and
> ca.ca_state = 'GA' and
> s.web_company_name = 'pri';
> {noformat}
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