Elastic Search: Different results for query string when using fields - elasticsearch

Question

We have an elastic search 5.5 setup. We use nest to perform our queries through C#.
When executing the following query:
{
"query": {
"bool": {
"must": [
{
"query_string": {
"query": "00917751"
}
}
]
}
}
}
We get the desired result: one result with that the number as identifier.
When using the following query:
{
"query": {
"bool": {
"must": [
{
"query_string": {
"query": "00917751",
"fields": [
"searchReference",
"searchIdentifier",
"searchObjectNo",
"searchBrand",
"searchExtSerNo"
]
}
}
]
}
}
}
We get no results.
The value we are searching for is in the field searchIndentifier, and has the value "1-00917751".
We have a custom analyzer called "final"
.Custom("final", cu => cu
.Tokenizer("keyword").Filters(new List() { "lowercase" }))
The field searchIndentifier has no custom analyzer set on it. We tried adding the whitespace tokenizer in it but that made no difference.
Another field called "searchObjectNo" does work, when we try to search for the value "S328-25" with the query "S328". These fields are exactly the same.
Any ideas here?
Another question. In the first query, when we search for 1-00917751 (without the quotes) we get a lot of results. But we think that is because of the keyword tokenizer?
Thank you
Schoof
Index settings and mappings:
{
"inventoryitems": {
"aliases": {},
"mappings": {
"inventoryobject": {
"properties": {
"articleGroups": {
"type": "nested",
"properties": {
"id": {
"type": "long"
}
}
},
"articleId": {
"type": "long"
},
"articleNumber": {
"type": "text",
"boost": 1.5,
"analyzer": "final"
},
"brand": {
"type": "text",
"analyzer": "final"
},
"catalogues": {
"type": "nested",
"properties": {
"articleGroupId": {
"type": "long"
},
"articleGroupName": {
"type": "text",
"analyzer": "final",
"fielddata": true
},
"id": {
"type": "long"
},
"name": {
"type": "text",
"analyzer": "final",
"fielddata": true
}
}
},
"details": {
"type": "nested",
"properties": {
"actualState": {
"type": "double"
},
"allocation": {
"type": "text",
"analyzer": "final",
"fielddata": true
},
"available": {
"type": "double"
},
"batch": {
"type": "text",
"analyzer": "final"
},
"calibrationDate": {
"type": "date"
},
"expected": {
"type": "double"
},
"externalSerialNumber": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"inReturn": {
"type": "double"
},
"inventory": {
"type": "double"
},
"isInMobileCarrier": {
"type": "boolean"
},
"locationDetail": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"locationId": {
"type": "long"
},
"locationName": {
"type": "text",
"analyzer": "final",
"fielddata": true
},
"locationType": {
"type": "text",
"analyzer": "final",
"fielddata": true
},
"lotId": {
"type": "long"
},
"mobileCarrierCode": {
"type": "text",
"analyzer": "final",
"fielddata": true
},
"mobileCarrierId": {
"type": "long"
},
"ownerCode": {
"type": "text",
"analyzer": "final"
},
"requested": {
"type": "double"
},
"reserved": {
"type": "double"
},
"storeLocationId": {
"type": "long"
},
"thicknessCode": {
"type": "text",
"analyzer": "final"
},
"weldedMark": {
"type": "text",
"analyzer": "final"
}
}
},
"docNo": {
"type": "long"
},
"hasStock": {
"type": "boolean"
},
"id": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"identifier": {
"type": "text",
"boost": 1.5,
"analyzer": "final"
},
"inventoryItemType": {
"properties": {
"name": {
"type": "text",
"analyzer": "final",
"fielddata": true
}
}
},
"mobileCarrierId": {
"type": "long"
},
"name": {
"type": "text",
"boost": 1.5,
"analyzer": "final"
},
"objectNumber": {
"type": "text",
"boost": 1.5,
"analyzer": "final"
},
"quantity": {
"type": "double"
},
"reference": {
"type": "text",
"boost": 1.5,
"analyzer": "final"
},
"searchBrand": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"searchExtSerNo": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"searchIndentifier": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"searchName": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"searchObjectNo": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"searchReference": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"sortNumber": {
"type": "long"
},
"stockUnit": {
"type": "text",
"boost": 1.5,
"analyzer": "final"
}
}
}
},
"settings": {
"index": {
"number_of_shards": "3",
"provided_name": "inventoryitems",
"creation_date": "1539253308319",
"analysis": {
"analyzer": {
"final": {
"filter": [
"lowercase"
],
"type": "custom",
"tokenizer": "keyword"
}
}
},
"number_of_replicas": "1",
"uuid": "Kb5KuYEiR5GQqgBPVYjJfA",
"version": {
"created": "5050299"
}
}
}
}
}

Answer 1

The answer is pretty simple: in your mapping your field is named searchIndentifier and in your query you're using a field called searchIdentifier which doesn't exist ;-)