# Output Format Of Explain


![left](./student-guide/diagram/17-EXPLAIN-output-describing-01-01.png)

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Currently, EXPLAIN for TiDB will output 5 columns:
- The ID column is primarily a unique identifier for the operator and consists mainly of the operator's type and the identification ID.
- The ESTrows column represents how many rows of data the optimizer estimates the operator will return.
- Task represents the type of operator. Currently, the execution plan is divided into two types of tasks, one is the root task, which is executed on the tidb server, and the other is called the cop task, which is pushed down to TiKV or TiFlash for execution.
- The AccessObject column indicates the object accessed, such as which table or index was accessed.
- OperatorInfo indicates metric information for some details of the operator.