new to ElasticSearch - start loving it. I am working on a Rails application (using elasticsearch-rails / elasticsearch-model).
I have two fields - both strings consisting of Tags.
about_me & about_you
Now I was to query the about_you of another user with the current users about_me.
At the same time, I wish to query the about_me of the other users with the about_you of the current user.
Does this make sense? Like two fields, two queries and each query is aimed at a particular field.
I just need a hint how this can be achieved in ES. For the sake of completeness, here is the part method I created in my rails model - it is incomplete:
def home_search(query_you, query_me)
search_definition =
{
query: {
multi_match: {
query: query_me,
fields: ['about_you']
}
..... SOMETHINGs MISSING HERE ..... ?
},
suggest: {
text: query,
about_me: {
term: {
size: 1,
field: :about_me
}
},
about_you: {
term: {
size: 1,
field: :about_you
}
}
}
}
self.class.__elasticsearch__.search(search_definition)
end
Any help, link or donations are welcome. Thank you!
I'm not sure I've understood your question but I can suggest two options:
First Use a bool query of type should and minimum_should_match=1. In this case you can write two queries for you'r searches. and If you want to distinguish between results you can pass a _name parameter in each query. something like this:
{
"query": {
"bool": {
"minimum_should_match": 1,
"should": [
{
"multi_match": {
"query": "query_me",
"fields": [
"about_you"
],
"_name": "about_you"
}
},
{
"multi_match": {
"query": "query_you",
"fields": [
"about_me"
],
"_name": "about_you"
}
}
]
}
}
}
By providing _name you can see which queries are hitted in your search result.
The second approach could be a _msearch query which in which you can pass multiple queries to the endpoint and get the results back.
Here are some useful links:
Bool Query
Named Queries
Related
I would like to do the Elasticsearch equivalent of the following SQL statement:
SELECT * FROM Users WHERE UserName NOT LIKE '%something%'
I don't care about efficiency or scoring... This only gets executed on occasion. I am using request body syntax.
Use a normal wildcard query, and negate it using a bool must_not query.
GET Users/_search
{
"query": {
"bool": {
"must_not": [{
"wildcard": {
"UserName": {
"value": "*something*"
}
}
}]
}
}
}
I'm not sure if your Users are your index in you Elastic - but this is the main idea anyway:
You could go with the regexp query by using Complement - "~" for negation:
GET Users/_search
{
"query": {
"regexp":{
"UserName": {
"value": ".*~(something).*"
}
}
}
}
For more useful reference, you can check here
P.S:
You will not get the best performance but it will do the job
This may be a repeted question but I'm not findin' a good solution.
I'm trying to search elasticsearch in order to get documents that contains:
- "event":"myevent1"
- "event":"myevent2"
- "event":"myevent3"
the documents must not contain all of them in the same document but the result should contain only documents that are only with those types of events.
And this is simple because elasticsearch helps me with the clause should
which returns exactly what i want.
But then, I want that all the documents must contain another condition that is I want the field result.example.example = 200 and this must be in every single document PLUS the document should be 1 of the previously described "event".
So, for example, a document has "event":"myevent1" and result.example.example = 200 another one has "event":"myevent2" and result.example.example = 200 etc etc.
I've tried this configuration:
{
"query": {
"bool": {
"must":{"match":{"operation.result.http_status":200}},
"should": [
{
"match": {
"event": "bank.account.patch"
}
},
{
"match": {
"event": "bank.account.add"
}
},
{
"match": {
"event": "bank.user.patch"
}
}
]
}
}
}
but is not working 'cause I also get documents that not contain 1 of the should field.
Hope I explained well,
Thanks in advance!
As is, your query tells ES to look for documents that must have "operation.result.http_status":200 and to boost those that have a matching event type.
You're looking to combine two must queries
one that matches one of your event types,
one for your other condition
The event clause accepts multiple values and those values are exact matches : you're looking for a terms query.
Try
{
"query": {
"bool": {
"must": [
{"match":{"operation.result.http_status":200}},
{
"terms" : {
"event" : [
"bank.account.patch",
"bank.account.add",
"bank.user.patch"
]
}
}
]
}
}
}
I have a question about the Elasticsearch DSL.
I would like to do a full text search, but scope the searchable records to a specific array of database ids.
In SQL world, it would be the functional equivalent of WHERE id IN(1, 2, 3, 4).
I've been researching, but I find the Elasticsearch query DSL documentation a little cryptic and devoid of useful examples. Can anyone point me in the right direction?
Here is an example query which might work for you. This assumes that the _all field is enabled on your index (which is the default). It will do a full text search across all the fields in your index. Additionally, with the added ids filter, the query will exclude any document whose id is not in the given array.
{
"bool": {
"must": {
"match": {
"_all": "your search text"
}
},
"filter": {
"ids": {
"values": ["1","2","3","4"]
}
}
}
}
Hope this helps!
As discussed by Ali Beyad, ids field in the query can do that for you. Just to complement his answer, I am giving an working example. In case anyone in the future needs it.
GET index_name/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"field": "your query"
}
},
{
"ids" : {
"values" : ["0aRM6ngBFlDmSSLpu_J4", "0qRM6ngBFlDmSSLpu_J4"]
}
}
]
}
}
}
You can create a bool query that contains an Ids query in a MUST clause:
https://www.elastic.co/guide/en/elasticsearch/reference/2.0/query-dsl-ids-query.html
By using a MUST clause in a bool query, your search will be further limited by the Ids you specify. I'm assuming here by Ids you mean the _id value for your documents.
According to es doc, you can
Returns documents based on their IDs.
GET /_search
{
"query": {
"ids" : {
"values" : ["1", "4", "100"]
}
}
}
With elasticaBundle symfony 5.2
$query = new Query();
$IdsQuery = new Query\Ids();
$IdsQuery->setIds($id);
$query->setQuery($IdsQuery);
$this->finder->find($query, $limit);
You have two options.
The ids query:
GET index/_search
{
"query": {
"ids": {
"values": ["1, 2, 3"]
}
}
}
or
The terms query:
GET index/_search
{
"query": {
"terms": {
"yourNonPrimaryIdField": ["1", "2","3"]
}
}
}
The ids query targets the document's internal _id field (= the primary ID). But it often happens that documents contain secondary (and more) IDs which you'd target thru the terms query.
Note that if your secondary IDs contain uppercase chars and you don't set their field's mapping to keyword, they'll be normalized (and lowercased) and the terms query will appear broken because it only works with exact matches. More on this here: Only getting results when elasticsearch is case sensitive
My data has a field localities which is an array of strings.
"localities": [
"Mayur Vihar Phase 1",
"Paschim Vihar",
"Rohini",
"",
"Laxmi Nagar",
"Vasant Vihar",
"Dwarka",
"Karol Bagh",
"Inderlok" ]
What query should I write to filter the documents by a specific locality such as "Rohini"?
A simple match query will be enough (if you don't know the mapping of your localities field).
POST <your index>/_search
{
"query": {
"match": {
"localities": "Rohini"
}
}
}
If the localities field is set as a string type and index as not_analyzed, the best way to query this is to use a term filter, wrapped in a filtered query (you can't use directly filters) :
POST <your index>/_search
{
"query": {
"filtered": {
"filter": {
"term": {
"localities": "Rohini"
}
}
}
}
}
If you doesn't need the score, the second solution is the way to go as filters doesn't compute score, are faster and cached.
Check the documentation for information about analysis which is a very important subject in ElasticSearch, heavily influencing the way you query.
POST /_search
{
"query": {
"match": {
"localities": "Rohini"
}
}
}
Or you can simply query:
GET /_search?q=localities:Rohini
This query is returning fine only one item "steve_jobs".
{
"query": {
"constant_score": {
"filter": {
"term": {
"name":"steve_jobs"
}
}
}
}
}
So, now I want to get all people with name prefix steve_. So I try this:
{
"query": {
"constant_score": {
"filter": {
"term": {
"name": "steve_"
}
}
}
}
}
This is returning nothing. Why?
I'm confused about when to use term query / term filter / terms filter / querystring query.
What you need is Prefix Query.
If you are indexing your document like so:
POST /testing_nested_query/class/
{
"name": "my name is steve_jobs"
}
And you are using the default analyzer, then the problem is that the term steve_jobs will be indexed as one term. So your Term Query will never be able to find any docs matching the term steve as there is no term like in the index. Prefix Query helps you solve your problem by searching for a prefix in all the indexed terms.
You can solve the same problem by making your custom analyzers (read this and this) so that steve_jobs is stored as steve and jobs.