Combining Filters
Filters can be combined using boolean logic to create more complex queries.
Bool Filter
The bool filter allows you to combine multiple filters using must, should, must_not, and filter clauses.
GET /products/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"name": "laptop"
}
}
],
"filter": [
{
"term": {
"category": "electronics"
}
},
{
"range": {
"price": {
"gte": 300,
"lte": 1500
}
}
}
]
}
}
}
In this example:
- The bool query combines a must clause with filter clauses.
- The must clause ensures the name field contains “laptop“.
- The filter clauses restrict the results to documents in the “electronics” category with prices between 300 and 1500.
Filtering Documents in Elasticsearch
Filtering documents in Elasticsearch is a crucial skill for efficiently narrowing down search results to meet specific criteria. Whether you’re building a search engine for an application or performing detailed data analysis, understanding how to use filters can greatly enhance your ability to find relevant documents quickly.
This guide will walk you through the basics and advanced techniques of filtering documents in Elasticsearch with detailed explanations, examples, and outputs.
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