[GitHub] [shardingsphere] FlyingZC opened a new issue, #23929: Drop index fails when create index does not specify an index name

["FlyingZC (via GitHub)" <gi...@apache.org>]

FlyingZC opened a new issue, #23929:
URL: https://github.com/apache/shardingsphere/issues/23929

   ## Bug Report
   
   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?
   master.
   
   ### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
   proxy.
   
   ### Expected behavior
   Drop index successfully when create index does not specify an index name
   
   ### Actual behavior
   Drop index failed.
   
   ### Reason analyze (If you can)
   Maybe the index rewrite does not handle the case without index name.
   
   ### Steps to reproduce the behavior, such as: SQL to execute, sharding rule configuration, when exception occur etc.
   ```sql
   -- 1.create index without index name
   alter table t_order add index(order_id);
   
   -- 2.show create table t_order;
   
   | t_order | CREATE TABLE `t_order` (
     `order_id` int(11) NOT NULL,
     `user_id` int(11) NOT NULL,
     `status` varchar(45) DEFAULT NULL,
     KEY `order_id` (`order_id`)
   ) ENGINE=InnoDB DEFAULT CHARSET=latin1
   
   -- 3.drop index with index name `order_id`
   alter table t_order drop index order_id;
   ERROR 1091 (42000): Can't DROP 'order_id_t_order_0'; check that column/key exists
   ```
   
   proxy config
   ```yaml
   databaseName: sharding_db
   
   dataSources:
     ds_0:
       url: jdbc:mysql://127.0.0.1:3306/demo_ds_0?serverTimezone=UTC&useSSL=false&allowPublicKeyRetrieval=true
       username: root
       password: x
       connectionTimeoutMilliseconds: 30000
       idleTimeoutMilliseconds: 60000
       maxLifetimeMilliseconds: 1800000
       maxPoolSize: 50
       minPoolSize: 1
     ds_1:
       url: jdbc:mysql://127.0.0.1:3306/demo_ds_1?serverTimezone=UTC&useSSL=false&allowPublicKeyRetrieval=true
       username: root
       password: x
       connectionTimeoutMilliseconds: 30000
       idleTimeoutMilliseconds: 60000
       maxLifetimeMilliseconds: 1800000
       maxPoolSize: 50
       minPoolSize: 1
   
   rules:
     - !SHARDING
       tables:
         t_order:
           actualDataNodes: ds_${0..1}.t_order_${0..1}
           tableStrategy:
             standard:
               shardingColumn: order_id
               shardingAlgorithmName: t_order_inline
           keyGenerateStrategy:
             column: order_id
             keyGeneratorName: snowflake
         t_order_item:
           actualDataNodes: ds_${0..1}.t_order_item_${0..1}
           tableStrategy:
             standard:
               shardingColumn: order_id
               shardingAlgorithmName: t_order_item_inline
           keyGenerateStrategy:
             column: order_item_id
             keyGeneratorName: snowflake
       bindingTables:
         - t_order,t_order_item
       defaultDatabaseStrategy:
         standard:
           shardingColumn: user_id
           shardingAlgorithmName: database_inline
       defaultTableStrategy:
         none:
       
       shardingAlgorithms:
         database_inline:
           type: INLINE
           props:
             algorithm-expression: ds_${user_id % 2}
         database_id_inline:
           type: INLINE
           props:
             algorithm-expression: ds_${id % 2}
         t_order_inline:
           type: INLINE
           props:
             algorithm-expression: t_order_${order_id % 2}
         t_order_item_inline:
           type: INLINE
           props:
             algorithm-expression: t_order_item_${order_id % 2}
       
       keyGenerators:
         snowflake:
           type: SNOWFLAKE
   
   ```
   
   ### Example codes for reproduce this issue (such as a github link).
   


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[GitHub] [shardingsphere] FlyingZC commented on issue #23929: Drop index fails when create index does not specify an index name

["FlyingZC (via GitHub)" <gi...@apache.org>]

FlyingZC commented on issue #23929:
URL: https://github.com/apache/shardingsphere/issues/23929#issuecomment-1413322925

   I want to investigate it, please assign me. @strongduanmu 


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