错误码
在 MatrixOne 中，错误信息是根据错误编码进行分类，某一类的错误编码会统一至一个确定的错误编码中，以便于用户进行排查。MatrixOne 数据库服务所发出的所有消息都分配有五个字符的错误代码，既包含了错误编码的种类，又包含了错误编码的具体类别。
实际使用过程中，你可以优先查看错误编码，搭配错误编码附带的文本错误消息，来确定发生了哪种错误情况。错误编码不会发生跨版本更改，并且也不会因错误消息的本地化而发生更改。
Note
MatrixOne 生成的一部分错误编码是由 SQL 标准定义的；一些未被标准定义的条件的额外错误编码是从其他数据库中发明或借用的。
| 错误编码开头 | 类型 |
|---|---|
| 201 | 内部错误 |
| 202 | 数字与函数错误 |
| 203 | 无效操作 |
| 204 | 未知错误或 IO 错误 |
| 205 | RPC 超时 |
| 206 | 事务错误或存储引擎错误 |
详细错误码对应的错误信息及错误详情请参见下表：
| 错误码 | 错误信息 | 错误详情 | 错误分类 |
|---|---|---|---|
| 20100 | ErrStart | internal error code start | 内部错误 |
| 20101 | ErrInternal | Internal error | 内部错误 |
| 20103 | ErrNYI | not yet implemented | 内部错误 |
| 20104 | ErrOOM | out of memory | 内部错误 |
| 20105 | ErrQueryInterrupted | query interrupted | 内部错误 |
| 20106 | ErrNotSupported | not supported | 内部错误 |
| 20200 | ErrDivByZero | division by zero | 数字与函数 |
| 20201 | ErrOutOfRange | data out of range | 数字与函数 |
| 20202 | ErrDataTruncated | data truncated | 数字与函数 |
| 20203 | ErrInvalidArg | invalid argument | 数字与函数 |
| 20204 | ErrTruncatedWrongValueForField | truncated wrong value for column | 数字与函数 |
| 20300 | ErrBadConfig | invalid configuration | 无效操作 |
| 20301 | ErrInvalidInput | invalid input | 无效操作 |
| 20302 | ErrSyntaxError | SQL syntax error | 无效操作 |
| 20303 | ErrParseError | SQL parser error | 无效操作 |
| 20304 | ErrConstraintViolation | constraint violation | 无效操作 |
| 20305 | ErrDuplicate | tae data duplicated | 无效操作 |
| 20306 | ErrRoleGrantedToSelf | cannot grant role | 无效操作 |
| 20307 | ErrDuplicateEntry | duplicate entry for key | 无效操作 |
| 20400 | ErrInvalidState | invalid state | 未知状态或 I/O 错误 |
| 20401 | ErrLogServiceNotReady | log service not ready | 未知状态或 I/O 错误 |
| 20402 | ErrBadDB | invalid database | 未知状态或 I/O 错误 |
| 20403 | ErrNoSuchTable | no such table | 未知状态或 I/O 错误 |
| 20404 | ErrEmptyVector | empty vector | 未知状态或 I/O 错误 |
| 20405 | ErrFileNotFound | file is not found | 未知状态或 I/O 错误 |
| 20406 | ErrFileAlreadyExists | file alread exists | 未知状态或 I/O 错误 |
| 20407 | ErrUnexpectedEOF | unexpteded end of file | 未知状态或 I/O 错误 |
| 20408 | ErrEmptyRange | empty range of file | 未知状态或 I/O 错误 |
| 20409 | ErrSizeNotMatch | file size does not match | 未知状态或 I/O 错误 |
| 20410 | ErrNoProgress | file has no io progress | 未知状态或 I/O 错误 |
| 20411 | ErrInvalidPath | invalid file path | 未知状态或 I/O 错误 |
| 20412 | ErrShortWrite | file io short write | 未知状态或 I/O 错误 |
| 20413 | ErrInvalidWrite | file io invalid write | 未知状态或 I/O 错误 |
| 20414 | ErrShortBuffer | file io short buffer | 未知状态或 I/O 错误 |
| 20415 | ErrNoDB | not connect to a database | 未知状态或 I/O 错误 |
| 20416 | ErrNoWorkingStore | no working store | 未知状态或 I/O 错误 |
| 20417 | ErrNoHAKeeper | cannot locate ha keeper | 未知状态或 I/O 错误 |
| 20418 | ErrInvalidTruncateLsn | invalid truncate lsn, shard already truncated | 未知状态或 I/O 错误 |
| 20419 | ErrNotLeaseHolder | not lease holder, current lease holder ID xxx | 未知状态或 I/O 错误 |
| 20420 | ErrDBAlreadyExists | database already exists | 未知状态或 I/O 错误 |
| 20421 | ErrTableAlreadyExists | table already exists | 未知状态或 I/O 错误 |
| 20422 | ErrNoService | service not found | 未知状态或 I/O 错误 |
| 20423 | ErrDupServiceName | duplicate service name | 未知状态或 I/O 错误 |
| 20424 | ErrWrongService | wrong service, expecting A, got B | 未知状态或 I/O 错误 |
| 20425 | ErrBadS3Config | bad s3 config | 未知状态或 I/O 错误 |
| 20426 | ErrBadView | invalid view | 未知状态或 I/O 错误 |
| 20427 | ErrInvalidTask | invalid task | 未知状态或 I/O 错误 |
| 20428 | ErrInvalidServiceIndex | invalid service idx | 未知状态或 I/O 错误 |
| 20429 | ErrDragonboatTimeout | Dragonboat timeout | 未知状态或 I/O 错误 |
| 20430 | ErrDragonboatTimeoutTooSmall | Dragonboat timeout too small | 未知状态或 I/O 错误 |
| 20431 | ErrDragonboatInvalidDeadline | Dragonboat invalid deadline | 未知状态或 I/O 错误 |
| 20432 | ErrDragonboatRejected | Dragonboat rejected | 未知状态或 I/O 错误 |
| 20433 | ErrDragonboatInvalidPayloadSize | invalid payload size | 未知状态或 I/O 错误 |
| 20434 | ErrDragonboatShardNotReady | shard not ready | 未知状态或 I/O 错误 |
| 20435 | ErrDragonboatSystemClosed | Dragonboat system closed | 未知状态或 I/O 错误 |
| 20436 | ErrDragonboatInvalidRange | Dragonboat invalid range | 未知状态或 I/O 错误 |
| 20437 | ErrDragonboatShardNotFound | shard not found | 未知状态或 I/O 错误 |
| 20438 | ErrDragonboatOtherSystemError | other system error | 未知状态或 I/O 错误 |
| 20439 | ErrDropNonExistsDB | Can't drop database ; database doesn't exist | 未知状态或 I/O 错误 |
| 20500 | ErrRPCTimeout | rpc timeout | RPC 超时 |
| 20501 | ErrClientClosed | client closed | RPC 超时 |
| 20502 | ErrBackendClosed | backend closed | RPC 超时 |
| 20503 | ErrStreamClosed | stream closed | RPC 超时 |
| 20504 | ErrNoAvailableBackend | no available backend | RPC 超时 |
| 20600 | ErrTxnClosed | the transaction has been committed or aborted | 事务 |
| 20601 | ErrTxnWriteConflict | transaction write conflict | 事务 |
| 20602 | ErrMissingTxn | missing transaction | 事务 |
| 20603 | ErrUnresolvedConflict | unresolved conflict | 事务 |
| 20604 | ErrTxnError | transaction error | 事务 |
| 20605 | ErrDNShardNotFound | TN shard not found | 事务 |
| 20606 | ErrShardNotReported | TN shard not reported | 事务 |
| 20607 | ErrTAEError | tae error | TAE 错误 |
| 20608 | ErrTAERead | tae read error | TAE 错误 |
| 20609 | ErrRpcError | rpc error | TAE 错误 |
| 20610 | ErrWaitTxn | transaction wait error | TAE 错误 |
| 20611 | ErrTxnNotFound | transaction not found | TAE 错误 |
| 20612 | ErrTxnNotActive | transaction not active | TAE 错误 |
| 20613 | ErrTAEWrite | tae write error | TAE 错误 |
| 20614 | ErrTAECommit | tae commit error | TAE 错误 |
| 20615 | ErrTAERollback | tae rollback error | TAE 错误 |
| 20616 | ErrTAEPrepare | tae prepare error | TAE 错误 |
| 20617 | ErrTAEPossibleDuplicate | tae possible duplicate | TAE 错误 |
| 20618 | ErrTxnRWConflict | r-w conflict | TAE 错误 |
| 20619 | ErrTxnWWConflict | w-w conflict | TAE 错误 |
| 20620 | ErrNotFound | transaction not found | TAE 错误 |
| 20621 | ErrTxnInternal | transaction internal error | TAE 错误 |
| 20622 | ErrTxnReadConflict | transaction read conflict | TAE 错误 |
| 20623 | ErrPrimaryKeyDuplicated | duplicated primary key | TAE 错误 |
| 20624 | ErrAppendableSegmentNotFound | appendable segment not found | TAE 错误 |
| 20625 | ErrAppendableBlockNotFound | appendable block not found | TAE 错误 |
| 20626 | ErrTAEDebug | TAE debug | TAE 错误 |