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# SHOW TRANSACTION
## description

该语法用于查看指定 transaction id 的事务详情。

语法：
    
```
SHOW TRANSACTION
[FROM db_name]
WHERE id = transaction_id;
```
        
返回结果示例：

```
     TransactionId: 4005
             Label: insert_8d807d5d-bcdd-46eb-be6d-3fa87aa4952d
       Coordinator: FE: 10.74.167.16
 TransactionStatus: VISIBLE
 LoadJobSourceType: INSERT_STREAMING
       PrepareTime: 2020-01-09 14:59:07
        CommitTime: 2020-01-09 14:59:09
        FinishTime: 2020-01-09 14:59:09
            Reason:
ErrorReplicasCount: 0
        ListenerId: -1
         TimeoutMs: 300000
```

* TransactionId：事务id
* Label：导入任务对应的 label
* Coordinator：负责事务协调的节点
* TransactionStatus：事务状态
    * PREPARE：准备阶段
    * COMMITTED：事务成功，但数据不可见
    * VISIBLE：事务成功且数据可见
    * ABORTED：事务失败
* LoadJobSourceType：导入任务的类型。
* PrepareTime：事务开始时间
* CommitTime：事务提交成功的时间
* FinishTime：数据可见的时间
* Reason：错误信息
* ErrorReplicasCount：有错误的副本数
* ListenerId：相关的导入作业的id
* TimeoutMs：事务超时时间，单位毫秒

## example

1. 查看 id 为 4005 的事务：

    SHOW TRANSACTION WHERE ID=4005;

2. 指定 db 中，查看 id 为 4005 的事务：

    SHOW TRANSACTION FROM db WHERE ID=4005;

## keyword

    SHOW, TRANSACTION