# NQL論理演算子

論理演算子を [NQLウェア](/platform/ja/understanding-key-data-platform-concepts/nexthink-query-language-nql/nql-keywords/nql-where.md) 句と組み合わせて使用し、NQL クエリ結果をフィルタリングします。

### NQL 'in'

`in` 論理演算子を使用して、メトリックの値がリストに含まれるかどうかを確認します。

**例**:

{% code overflow="wrap" lineNumbers="true" %}

```
...
| where package.name in [ "MS Teams", "Zoom" ]
```

{% endcode %}

{% code overflow="wrap" lineNumbers="true" %}

```
...
| where code in [94011, 94031]
```

{% endcode %}

### NQL '!in'

`!in` 論理演算子を使用して、メトリックの値がリストに**含まれない**ことを確認します。

**例**:

{% code overflow="wrap" lineNumbers="true" %}

```
...
| where hardware.type !in [virtual, null]
```

{% endcode %}

{% code overflow="wrap" lineNumbers="true" %}

```
...
| where code !in [ 403, 404]
```

{% endcode %}

### NQL 'contains'

`contains` 論理演算子を使用して、文字列が文字列の配列に含まれているかどうかを確認します。

**例**:

{% code overflow="wrap" lineNumbers="true" %}

```
...
| where monitor.tags contains 'VDI'
```

{% endcode %}

### NQL '!contains'

`!contains` 論理演算子を使用して、文字列が**含まれていない**ことを確認します。

**例**:

{% code overflow="wrap" lineNumbers="true" %}

```
...
| where monitor.tags !contains 'VDI'
```

{% endcode %}


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