# autoregress
<a name="CWL_QuerySyntax-Autoregress"></a>

Use the `autoregress` command to create lagged (previous-row) copies of a field's values. This is the lag/lead equivalent for CloudWatch Logs Insights.

**Syntax**  


```
| autoregress {{field}} [AS {{alias}}] [p={{start}}[-{{end}}]]
```

The command uses the following arguments:
+ `{{field}}` – The field to create lag values for.
+ `AS {{alias}}` (Optional) – An alias for the output field.
+ `p={{N}}` (Optional) – Single lag depth (default 1). Use `p={{N}}-{{M}}` for a range of lags.

**Example**  
The following query creates four lag fields (`bytes_p1` through `bytes_p4`).

```
fields @timestamp, bytes
| autoregress bytes p=1-4
```