kimmking commented on issue #4236: sharing-proxy can't suport mysql 'longblob' data type URL: https://github.com/apache/incubator-shardingsphere/issues/4236#issuecomment-584517973 blob type also has this problem. reproduce it: 1. create a table with a blob type column: ```sql CREATE TABLE `testblob` ( `id` bigint(1) NOT NULL, `descblob` blob, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; ``` 2. insert a row by mysql-cli directly: ``` mysql> insert into testblob values (1,'\u0083\u0083\u0083\u0083'); Query OK, 1 row affected (0.01 sec) ``` 3. insert a row by proxy: ``` insert into testblob values (1,'\u0083\u0083\u0083\u0083') [2020-02-11 15:55:30] [C1000][10002] 2Unknown exception: [null] ``` And in proxy logs, an error can be found: ``` [ERROR] 16:06:47.135 [ShardingSphere-Command-13] o.a.s.s.f.c.CommandExecutorTask - Exception occur: java.util.NoSuchElementException: null at java.util.Collections$EmptyIterator.next(Collections.java:4189) at org.apache.shardingsphere.sharding.route.engine.condition.engine.InsertClauseShardingConditionEngine.createShardingCondition(InsertClauseShardingConditionEngine.java:86) at org.apache.shardingsphere.sharding.route.engine.condition.engine.InsertClauseShardingConditionEngine.createShardingConditions(InsertClauseShardingConditionEngine.java:65) at org.apache.shardingsphere.sharding.route.engine.ShardingRouter.getShardingConditions(ShardingRouter.java:116) at org.apache.shardingsphere.sharding.route.engine.ShardingRouter.route(ShardingRouter.java:87) at org.apache.shardingsphere.core.shard.SimpleQueryShardingEngine.route(SimpleQueryShardingEngine.java:54) at org.apache.shardingsphere.core.shard.BaseShardingEngine.executeRoute(BaseShardingEngine.java:109) at org.apache.shardingsphere.core.shard.BaseShardingEngine.shard(BaseShardingEngine.java:91) at org.apache.shardingsphere.shardingproxy.backend.communication.jdbc.wrapper.StatementExecutorWrapper.doShardingRoute(StatementExecutorWrapper.java:85) at org.apache.shardingsphere.shardingproxy.backend.communication.jdbc.wrapper.StatementExecutorWrapper.route(StatementExecutorWrapper.java:71) at org.apache.shardingsphere.shardingproxy.backend.communication.jdbc.JDBCDatabaseCommunicationEngine.execute(JDBCDatabaseCommunicationEngine.java:87) at org.apache.shardingsphere.shardingproxy.backend.text.query.QueryBackendHandler.execute(QueryBackendHandler.java:54) at org.apache.shardingsphere.shardingproxy.frontend.mysql.command.query.text.query.MySQLComQueryPacketExecutor.execute(MySQLComQueryPacketExecutor.java:75) at org.apache.shardingsphere.shardingproxy.frontend.command.CommandExecutorTask.executeCommand(CommandExecutorTask.java:92) at org.apache.shardingsphere.shardingproxy.frontend.command.CommandExecutorTask.run(CommandExecutorTask.java:72) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:748) ```
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