xue2lang opened a new issue #8152: URL: https://github.com/apache/shardingsphere/issues/8152
## Bug Report **For English only**, other languages will not accept. Before report a bug, make sure you have: - Searched open and closed [GitHub issues](https://github.com/apache/shardingsphere/issues). - Read documentation: [ShardingSphere Doc](https://shardingsphere.apache.org/document/current/en/overview). Please pay attention on issues you submitted, because we maybe need more details. If no response anymore and we cannot reproduce it on current information, we will **close it**. Please answer these questions before submitting your issue. Thanks! ### Which version of ShardingSphere did you use? 4.1.1 ### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy? ShardingSphere-JDBC ### Expected behavior database: db0,db1 table：tb_0,tb_1 (every database has two table) shardingColumn: id (database and table all use it) sql：select * from tb where id in (a,b) ShardingConditions： id in (a,b) id=a is in db0.tb0 id=b is in db1.tb1 expect： select * from db0.tb0 in (a,b) # will be better: select * from db0.tb0 in (a); select * from db1.tb1 in (a,b) # will be better: select * from db1.tb1 in (b) ### Actual behavior sql behavior is cartesian set eg: select * from db0.tb0 in (a,b) select * from db0.tb1 in (a,b) select * from db1.tb0 in (a,b) select * from db1.tb1 in (a,b) ### Reason analyze (If you can) code：org.apache.shardingsphere.sharding.route.engine.type.standard.ShardingStandardRoutingEngine#route0 not bind route value with every database when routeDataSources ,only return the database collection so when routeTables ,every route value will be to route all tables for every database ，return cartesian set ![Uploading image.png…]() ### Steps to reproduce the behavior, such as: SQL to execute, sharding rule configuration, when exception occur etc. has any plan to optimize it ??? or have some good idea expect： select * from db0.tb0 in (a,b) # will be better: select * from db0.tb0 in (a); select * from db1.tb1 in (a,b) # will be better: select * from db1.tb1 in (b) ### Example codes for reproduce this issue (such as a github link). i want to change code when routeDataSources ,bind every route value to database ,but i donot know it will produce other problem?? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
