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# `block`

## Description

The `block` command filters out all documents where the given predicate evaluates to true. It is the inverse of `filter`, which keeps only documents that match the predicate.

## Syntax

```
block <boolean expression>
```

## Example

**Use case: Exclude successful HTTP responses**

In this example, we remove all documents representing successful (2xx) HTTP status codes to focus on redirects and errors.

### Example data

```
{ "status_code": "200", "endpoint": "/api/login" },

{ "status_code": "301", "endpoint": "/api/redirect" },

{ "status_code": "500", "endpoint": "/api/payment" }
```

### Example query

```
block $d.status_code.startsWith('2')
```

### Example output

```
  { "status_code": "301", "endpoint": "/api/redirect" },

  { "status_code": "500", "endpoint": "/api/payment" }
```