# Exclude null itens from aggregation

**URL:** <https://discuss.elastic.co/t/exclude-null-itens-from-aggregation/200916>\
**Category:** Logstash\
**Created:** [September 24, 2019, 5:27pm UTC](https://discuss.elastic.co/t/exclude-null-itens-from-aggregation/200916 "2019-09-24T17:27:55Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![fernando.vicente](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fernando.vicente/32/54815_2.png) [@fernando.vicente](https://discuss.elastic.co/u/fernando.vicente)\
**Post date:** [September 24, 2019, 5:27pm UTC](https://discuss.elastic.co/t/exclude-null-itens-from-aggregation/200916/1 "2019-09-24T17:27:55Z")

</div>

Greetings,

I'm trying to do an aggregation like that;

```
 map['sub_menu'] ||= []
                checkedFieldSubMenu = {
                    'sub_menu_id' => event.get('sub_menu_id'),
                    'cms_menu_name' => event.get('sub_menu_name'),
                    'description' => event.get('sub_menu_description'),
                    'label_value' => event.get('sub_menu_label_value'),
                    'link_url' => event.get('sub_menu_link_url'),
                }
                
                if ! map['sub_menu'].include?(checkedFieldSubMenu)
                        map['sub_menu'] << checkedFieldSubMenu
                end

```

Its works pretty well, except when my checkFieldSubMenu contains null values like this;

```
 "parent_id": null,
                "sub_menu": [
                    {
                        "description": null,
                        "cms_menu_name": null,
                        "label_value": null,
                        "link_url": null,
                        "sub_menu_id": null
                    }
                ],

```

Any tips to do not create **sub\_menu** when **sub\_menu\_id is null**?

Ty for now

---

<div class="post-metadata">

**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [September 24, 2019, 5:51pm UTC](https://discuss.elastic.co/t/exclude-null-itens-from-aggregation/200916/2 "2019-09-24T17:51:29Z")

</div>

Wrap most of the code in

```
if event.get('sub_menu_id')
    ...
end
```

---

<div class="post-metadata">

**Author:** ![fernando.vicente](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fernando.vicente/32/54815_2.png) [@fernando.vicente](https://discuss.elastic.co/u/fernando.vicente)\
**Post date:** [September 24, 2019, 6:10pm UTC](https://discuss.elastic.co/t/exclude-null-itens-from-aggregation/200916/3 "2019-09-24T18:10:40Z")

</div>

Thank you very much!

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [October 22, 2019, 6:10pm UTC](https://discuss.elastic.co/t/exclude-null-itens-from-aggregation/200916/4 "2019-10-22T18:10:46Z")

</div>

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