Bug反馈，在连接MyCat+MySql架构的时候，第一次查询语句正常，第二次就出现MySql.Data.MySqlClient.MySqlException:“Unknown command”错误

[txke]

下面是错误信息： MySql.Data.MySqlClient.MySqlException HResult=0x80004005 Message=Unknown command Source=System.Private.CoreLib StackTrace: at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task) at System.Threading.Tasks.ValueTask1.get_Result() at System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable1.ConfiguredValueTaskAwaiter.GetResult() at MySqlConnector.Core.ServerSession.d69.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\Core\ServerSession.cs:line 495 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult() at MySqlConnector.Core.ConnectionPool.d10.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\Core\ConnectionPool.cs:line 72 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at MySqlConnector.Core.ConnectionPool.d10.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\Core\ConnectionPool.cs:line 141 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Threading.Tasks.ValueTask1.get_Result() at System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable1.ConfiguredValueTaskAwaiter.GetResult() at MySql.Data.MySqlClient.MySqlConnection.d__110.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlConnection.cs:line 645 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Threading.Tasks.ValueTask1.get_Result() at System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable1.ConfiguredValueTaskAwaiter.GetResult() at MySql.Data.MySqlClient.MySqlConnection.d26.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlConnection.cs:line 312 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter.GetResult() at MySql.Data.MySqlClient.MySqlConnection.Open() in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlConnection.cs:line 280 at EFCore.Sharding.DbRepository.GetDataTableWithSql(String sql, ValueTuple2[] parameters) at EFCore.Sharding.DbRepository.GetListBySql[T](String sqlStr, ValueTuple2[] parameters) at EFCore.Program.Main(String[] args) in C:\EFCore\EFCore\Program.cs:line 22

[Coldairarrow]

这是因为mycat并不是完全兼容mysql协议导致的 也就是说不能用mycat，需要另寻方案