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Posted to notifications@shardingsphere.apache.org by GitBox <gi...@apache.org> on 2019/11/02 09:45:06 UTC

[GitHub] [incubator-shardingsphere] jiang2015 commented on issue #3382: Throws "Table xxx not found" Exception when subquery's tableName should be rewrited.

jiang2015 commented on issue #3382: Throws "Table xxx not found" Exception when subquery's tableName should be rewrited.
URL: https://github.com/apache/incubator-shardingsphere/issues/3382#issuecomment-549028027
 
 
   I have some problems: @terrymanu 
   1.when the subquery's TableReferencesContext shoule be extracted,SubqueryPredicateExtractor or TableReferencesExtractor ?
   2. where the subquery's TableReferencesContext should be saved,it can be used when ShardingRouter.route
   ![深度截图_选择区域_20191102173313](https://user-images.githubusercontent.com/10781145/68069164-69e4c480-fd97-11e9-8bf5-e0f56ad54359.png)
   WhereClauseShardingConditionEngine.createShardingConditions 
   ![深度截图_选择区域_20191102173926](https://user-images.githubusercontent.com/10781145/68069190-bfb96c80-fd97-11e9-83fd-53b23e6c4ffe.png)
   tablesContext shoule use subquery's tablesContext
   3.the sql"SELECT * FROM t_order_item WHERE status IN (SELECT status FROM t_order WHERE user_id = 10 AND order_id = 1000)" how to route,by subtable[t_order],or maintable [t_order_item] or [t_order] and [t_order_item] 
   
   thank you!

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