# How to get only exact matches for GUID via Nest 6.5
**URL:** https://discuss.elastic.co/t/how-to-get-only-exact-matches-for-guid-via-nest-6-5/169946
**Category:** Elasticsearch
**Created:** [February 26, 2019, 7:25am UTC](https://discuss.elastic.co/t/how-to-get-only-exact-matches-for-guid-via-nest-6-5/169946 "2019-02-26T07:25:40Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@ArtVandelay101](https://discuss.elastic.co/u/ArtVandelay101)
#### Post date: [February 26, 2019, 7:25am UTC](https://discuss.elastic.co/t/how-to-get-only-exact-matches-for-guid-via-nest-6-5/169946/1 "2019-02-26T07:25:40Z")
Hello,
I have following index, in which I labeled the 'Id' as 'Keyword':
```
[ElasticsearchType(IdProperty = nameof(Id))]
public class MyIndexModel
{
[Keyword]
public Guid Id { get; set; }
[Text]
public string SomeString{ get; set;}
}
```
If I do following query on the index:
```
var searchResponse = await this.elasticClient
.SearchAsync(
s => s
.Index(MyIndexName)
.Size(1)
.PostFilter( pf => pf
.Bool( b => b.
Must( must => must
.Match(m => m
.Field(f => f.Id)
.Query(id.ToString()))))));
```
In which the 'id' in the last line is following GUID
`'3B9BAAEE-AC35-E911-8E9E-D89EF315843C'`
I get a result matching
`'b859d1ff-ac35-e911-8e9e-d89ef315843c'`.
The two Guids are similar but not the same. I thought that using the "Keyword" annotation **guarantees** that only exact matches are returned.
One further thing I've noticed is that the mapping for properties marked with "Keyword" and those marked with "Text" looks the same :
```
{
"mapping": {
"myindexmodel": {
"properties": {
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"somestring": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
}
}
}
```
What am I missing? How do I get only exact matches for GUID via Nest 6.5?
Thanks,
Art
---
### Author:  [@ArtVandelay101](https://discuss.elastic.co/u/ArtVandelay101)
#### Post date: [February 26, 2019, 8:22am UTC](https://discuss.elastic.co/t/how-to-get-only-exact-matches-for-guid-via-nest-6-5/169946/2 "2019-02-26T08:22:07Z")
I found the solution: using "MatchPhrase" instead of "Match" does the trick 🙂
---
### Author:  [@forloop](https://discuss.elastic.co/u/forloop)
#### Post date: [February 27, 2019, 2:00am UTC](https://discuss.elastic.co/t/how-to-get-only-exact-matches-for-guid-via-nest-6-5/169946/3 "2019-02-27T02:00:19Z")
For a `keyword` field like `Id` where you are looking for an **exact match** , you should use [a `term` query](https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-term-query.html), so that the query input does not undergo analysis.
Additionally, you should move the `bool` query out of `.PostFilter(...)` and into `.Query(...)`, since the search request has no aggregations, so there is no need to use `post_filter` in this instance.
One more thing, since the `bool` query contains only a single query, there's no need to wrap it in a `bool` query, so you can specify the `term` query directly in `.Query(q => q.Term(...))`.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 27, 2019, 2:00am UTC](https://discuss.elastic.co/t/how-to-get-only-exact-matches-for-guid-via-nest-6-5/169946/4 "2019-03-27T02:00:22Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.