# Check whether a field exists in elasticsearch
**URL:** https://discuss.elastic.co/t/check-whether-a-field-exists-in-elasticsearch/95723
**Category:** Kibana
**Created:** [August 3, 2017, 1:31pm UTC](https://discuss.elastic.co/t/check-whether-a-field-exists-in-elasticsearch/95723 "2017-08-03T13:31:25Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@sLuvpreet33](https://discuss.elastic.co/u/sLuvpreet33)
#### Post date: [August 3, 2017, 1:31pm UTC](https://discuss.elastic.co/t/check-whether-a-field-exists-in-elasticsearch/95723/1 "2017-08-03T13:31:25Z")
I want to draw a timeseries graph in Timelion of Kibana.
For example, below checks for documents which have rating equal to 5.
```
.es(index='database', timefield='booking_time', q='rating:5')
```
I want to draw only those documents which have a specific field in it.
In discover tab, I know how to do it, `_exists_:field_name`.
but I don't know how to do it in Timelion expression.
---
### Author:  [@Brandon\_Kobel](https://discuss.elastic.co/u/Brandon_Kobel)
#### Post date: [August 3, 2017, 2:10pm UTC](https://discuss.elastic.co/t/check-whether-a-field-exists-in-elasticsearch/95723/2 "2017-08-03T14:10:14Z")
@sLuvpreet33 the `q=` parameter in Timelion can be used like the discover tab's query bar, so you can do:
```auto
.es(index='database', timefield='booking_time', q='rating:5 AND _exists_:field_name')
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 31, 2017, 2:10pm UTC](https://discuss.elastic.co/t/check-whether-a-field-exists-in-elasticsearch/95723/3 "2017-08-31T14:10:17Z")
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