ElasticSearch - Match (email value) returns wrong registers - elasticsearch

Question

I'm using match to search for a specific email but the result is wrong. The match property brings me results similar. If the result exists, the result displays on first lines but when the results not exists, it brings me result by same domain.
Here is my query:
{
"query": {
"match" : {
"email" : "placplac#xxx.net"
}
}
}
This email doesn't exist in my base but returning values like banana#xxx.net, ronyvon#xxx.net*, etc.
How can i force to return only if the value is equal from the query?
Thank in advance.

Answer 1

You need to put "index":"not_analyzed" on the "email" field. That way, the only terms that are queried against are the exact values that have been stored to that field (as opposed to the case with the standard analyzer, which is the default used if no analyzer is listed).
To illustrate, I set up a simple mapping with the email field not analyzed, and added two simple docs:
DELETE /test_index
PUT /test_index
{
"settings": {
"number_of_shards": 1,
"number_of_replicas": 0
},
"mappings": {
"doc": {
"properties": {
"email": {
"type": "string",
"index": "not_analyzed"
}
}
}
}
}
PUT /test_index/doc/1
{"email": "placplac#xxx.net"}
PUT /test_index/doc/2
{"email": "placplac#nowhere.net"}
Now your match query will return only the document that matches the query exactly:
POST /test_index/_search
{
"query": {
"match" : {
"email" : "placplac#xxx.net"
}
}
}
...
{
"took": 2,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"failed": 0
},
"hits": {
"total": 1,
"max_score": 1,
"hits": [
{
"_index": "test_index",
"_type": "doc",
"_id": "1",
"_score": 1,
"_source": {
"email": "placplac#xxx.net"
}
}
]
}
}
Here is the code I used:
http://sense.qbox.io/gist/12763f63f2a75bf30ff956c25097b5955074508a
PS: What you actually probably want here is a term query or even term filter, since you don't want any analysis on the query text. So maybe something like:
POST /test_index/_search
{
"query": {
"constant_score": {
"filter": {
"term": {
"email": "placplac#xxx.net"
}
}
}
}
}