# Use an analyzer and a normalizer at the same time on the same field?
**URL:** https://discuss.elastic.co/t/use-an-analyzer-and-a-normalizer-at-the-same-time-on-the-same-field/252356
**Category:** Elasticsearch
**Created:** [October 16, 2020, 1:46pm UTC](https://discuss.elastic.co/t/use-an-analyzer-and-a-normalizer-at-the-same-time-on-the-same-field/252356 "2020-10-16T13:46:37Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Nicolas\_Rey](https://discuss.elastic.co/u/Nicolas_Rey)
#### Post date: [October 16, 2020, 1:46pm UTC](https://discuss.elastic.co/t/use-an-analyzer-and-a-normalizer-at-the-same-time-on-the-same-field/252356/1 "2020-10-16T13:46:37Z")
Hi,
for some reason, if need to query (prefix) with an insensitive case on a text field, but I would like to keep the advantage of the tokenisation made by the default Analyzer on the same field, is it possible ?
Example
My indexed field (let's say three cases from input)
"productSearchName" : "best white chocolate"
"productSearchName" : "Best White Chocolate"
"productSearchName" : "BEST WhItE ChocolatE"
If I apply the standard Analyzer, the produced tokens will be
["best","white","chocolate"] for three syntax, but how to perform a Prefix query (start with "best white") ? Using the productSearchName.Keyword is impossible since the sensitive case.
However I can perform match query on any part of the indexed tokens.
If I apply a Normalizer like this one
```auto
"analysis": {
"normalizer": {
"case_insensitive": {
"filter": [
"lowercase"
],
"type": "custom"
}
}
```
then for the same productSearchName input, I 'll get only one token ["best white chocolate"] which'll allow me to perform case insensitive prefix query, but now I can't easily perform a match query, I need to use a wildcard instead.
Well can someone tell me if both an Analyser and a Normalizer can be used by the same field producing at the same time the tokens ["best","white","chocolate"] and ["best white chocolate"] allowing me to keep the power of match query (no wildcard then) and perform case insensitive prefix query at the same time ?
Many thanks
---
### Author:  [@spinscale](https://discuss.elastic.co/u/spinscale)
#### Post date: [October 16, 2020, 2:03pm UTC](https://discuss.elastic.co/t/use-an-analyzer-and-a-normalizer-at-the-same-time-on-the-same-field/252356/2 "2020-10-16T14:03:01Z")
Side note: A [normalizer](https://www.elastic.co/guide/en/elasticsearch/reference/7.9/normalizer.html) only works on keyword fields, so I do not think that this is an option here.
First, you may want to take a look at [multi fields](https://www.elastic.co/guide/en/elasticsearch/reference/7.9/multi-fields.html) allowing you to index a single field in different ways in Elasticsearch.
And, just as another point to read about: There is a dedicated [search as you type](https://www.elastic.co/guide/en/elasticsearch/reference/7.9/search-as-you-type.html) field type that could help your use-case.
Hope that helps to get started!
---
### Author:  [@Nicolas\_Rey](https://discuss.elastic.co/u/Nicolas_Rey)
#### Post date: [October 16, 2020, 2:19pm UTC](https://discuss.elastic.co/t/use-an-analyzer-and-a-normalizer-at-the-same-time-on-the-same-field/252356/3 "2020-10-16T14:19:19Z")
@spinscale
thanks for your quick reply, well I use C# Nest lib with the AutoMap() method which give by default for all "string" fields a "text" type and a keyword.
```
"stringTypeField": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
```
Is it possible to have such mapping for a field (standard Analyzer for text and normalizer for keyword) ?
```
"productType": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"normalizer": "case_insensitive"
}
}
}
```
I'll have a look at search\_as\_you\_type which may as you say solve my problem!
---
### Author:  [@Nicolas\_Rey](https://discuss.elastic.co/u/Nicolas_Rey)
#### Post date: [October 16, 2020, 2:51pm UTC](https://discuss.elastic.co/t/use-an-analyzer-and-a-normalizer-at-the-same-time-on-the-same-field/252356/4 "2020-10-16T14:51:15Z")
@spinscale
The **search\_as\_you\_type** mapping is awesome!! Combining best of two worlds.
and @abdon told me about v7.10 which'll allows to perform prefix queries on Keyword with a case insensitive parameter (no more Normalizer, "just" for that)
Both of you made my day, thank you very much guys 🙂
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 13, 2020, 2:51pm UTC](https://discuss.elastic.co/t/use-an-analyzer-and-a-normalizer-at-the-same-time-on-the-same-field/252356/5 "2020-11-13T14:51:24Z")
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