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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2020/04/16 07:07:40 UTC

[GitHub] [incubator-doris] kangpinghuang opened a new issue #3331: query against view failed when the view contains union

kangpinghuang opened a new issue #3331: query against view failed when the view contains union
URL: https://github.com/apache/incubator-doris/issues/3331
 
 
   there is a view like this:
   
   CREATE VIEW `view_oppd_pmc_baiduapp_overview_all_plus` AS SELECT `t1`.`event_day` AS `event_day`, `product` AS `product`, 'kpi_roll_dau' AS `type`, CAST(sum(`kpi_dau`) AS DOUBLE) AS `value` FROM (SELECT DISTINCT `event_day` AS `event_day` FROM `default_cluster:muse_db`.`oppd_pmc_baiduapp_overview_all` WHERE `type` = 'kpi_dau') t1 INNER JOIN (SELECT `event_day` AS `event_day`, `product` AS `product`, `value` AS `kpi_dau` FROM `default_cluster:muse_db`.`oppd_pmc_baiduapp_overview_all` WHERE `type` = 'kpi_dau') t2 ON (((`t1`.`event_day` >= `t2`.`event_day`)) AND ((date_sub(`t1`.`event_day`, 29) <= `t2`.`event_day`))) GROUP BY `t1`.`event_day`, `product` UNION ALL SELECT `event_day` AS `event_day`, `product` AS `product`, 'kpi_duration' AS `type`, CAST(`duration` AS DOUBLE) AS `value` FROM `default_cluster:muse_db`.`baiduapp_overview_kpi_baiduboxapp_duration` UNION ALL SELECT `event_day` AS `event_day`, `product` AS `product`, 'kpi_dau_login' AS `type`, CAST(`kpi_dau_load` AS DOUBLE) AS `value` FROM `default_cluster:muse_db`.`baiduapp_overview_kpi_login_rate` UNION ALL SELECT `event_day` AS `event_day`, `product` AS `product`, 'kpi_feed_dau' AS `type`, CAST(`feed_dau` AS DOUBLE) AS `value` FROM `default_cluster:muse_db`.`baiduapp_overview_kpi_feed_dau`;
   
   
   and query:
   
   select type from view_oppd_pmc_baiduapp_overview_all_plus group by type;
   failed.
   the failed reason is:
   
   failed to build storage scanner, no materialized slot
   

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[GitHub] [incubator-doris] EmmyMiao87 commented on issue #3331: query against view failed when the view contains union

Posted by GitBox <gi...@apache.org>.
EmmyMiao87 commented on issue #3331: query against view failed when the view contains union
URL: https://github.com/apache/incubator-doris/issues/3331#issuecomment-614457934
 
 
   If the view include both union and constant, the query will thrown exception when it includes view.
   
   ```
   mysql> create view test as
       -> SELECT event_day,   'kpi_duration' AS `type` FROM `default_cluster:muse_db`.`test`
       -> UNION ALL
       -> SELECT event_day,  'kpi_dau_login' AS `type` FROM `default_cluster:muse_db`.`test` ;
   Query OK, 0 rows affected (0.02 sec)
   
   mysql> select type from test;
   ERROR 1064 (HY000): failed to build storage scanner, no materialized slot!
   ```

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