# How do I filter a regexp query by timestamp?
**URL:** https://discuss.elastic.co/t/how-do-i-filter-a-regexp-query-by-timestamp/139238
**Category:** Elasticsearch
**Created:** [July 9, 2018, 9:34pm UTC](https://discuss.elastic.co/t/how-do-i-filter-a-regexp-query-by-timestamp/139238 "2018-07-09T21:34:40Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Ryan\_McGauley](https://discuss.elastic.co/u/Ryan_McGauley)
#### Post date: [July 9, 2018, 9:34pm UTC](https://discuss.elastic.co/t/how-do-i-filter-a-regexp-query-by-timestamp/139238/1 "2018-07-09T21:34:40Z")
I'm trying to make a query that will search based on a regular expression, then filter out the results based on a timestamp `eventTimeStamp`
[Here is the link to the query I was trying to execute](https://gist.github.com/rym23/95bfa590c4abee735156a63c220dbf2a)
[and the error that resulted from it](https://gist.github.com/rym23/ab821fb88e794917f885ddd31cc679ec)
I haven't been able to find anything about this elsewhere, which leads me to believe that what I'm trying to do is not possible.
Any help is appreciated.
---
### Author:  [@klof](https://discuss.elastic.co/u/klof)
#### Post date: [July 10, 2018, 11:43am UTC](https://discuss.elastic.co/t/how-do-i-filter-a-regexp-query-by-timestamp/139238/2 "2018-07-10T11:43:39Z")
You have an error in the syntax.
You cannot have regex and range queries on the same level.
You need to combine them with a `bool query` for example :
```
GET firehose-raw/_search
{
"query": {
"bool": {
"filter": {
"range": {
"eventTimeStamp": {
"lte": "2018-05-10T05:05:05.005"
}
}
},
"should": [
{
"regexp": {
"rawlog.keyword": ".*unresponsive target=/.*"
}
}
]
}
}
}
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 7, 2018, 11:43am UTC](https://discuss.elastic.co/t/how-do-i-filter-a-regexp-query-by-timestamp/139238/3 "2018-08-07T11:43:44Z")
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