Query multiple indices Delete indices Common problems Overview In OpenSearch, an index (plural: indices) contains a schema and can have one or more shards and replicas. An OpenSearch index is divided into shards and each shard is an instance of a Lucene index. Indices are used to store the ...
Elasticsearch indexes are split into manageable units called shards, which are a collection of documents. Shards are the basic unit of search and are replicated across multiple nodes for redundancy and fault tolerance. Node A node is an independent instance of Elasticsearch and manages a collection ...
请参阅 http://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-highlighting.html. public array $highlight = null $index public property The index to retrieve data from. This can be a string representing a single index or a an array of multiple indexes. If this is not...
These indexes are named in the .security_audit_log-* format. You can query such indexes in the Kibana console of the cluster to view the audit logs. For more information, see Configure the YML file. Before you view the audit logs of an Elasticsearch cluster, you must click Log ...
to write a compound query in elasticsearch, you use the bool query, which allows you to combine multiple queries or filters using boolean operators. you can nest different query types within a bool query and specify whether the conditions must match all queries ("must"), at least one query ...
The query can be provided using a simple query string as a paremeter. curl -XDELETE 'localhost:9200/twitter/tweet/_query?q=user:kimchy&pretty' Delete-by-query supports deletion accoss multiple indics and multiple types. IMPORTANT: Delete by query will only delete the version of the document ...
client.DeleteByQuery<ElasticsearchProject>(q => q .Query(rq => rq .Term(f => , "") ) ); 1. 2. 3. 4. 5. Elasticsearch allows you to delete over multiple types and indexes, so does NEST. client.DeleteByQuery<ElasticSearchProject>(q => q ...
The index to retrieve data from. This can be a string representing a single index or a an array of multiple indexes. If this isnullit means that all indexes are being queried. $typestring|array The type to retrieve data from. This can be a string representing a single type or a an ...
Composite index is an index that involves multiple fields, it can be used instead of several separate indexes.type Item struct { ID int64 `reindex:"id"` // 'id' is a part of a primary key SubID int `reindex:"sub_id"` // 'sub_id' is a part of a primary key // Fields // ....
Elasticsearch is used as a supplement to relational databases, such as MySQL and GaussDB(for MySQL), to improve the full-text search and high-concurrency ad hoc query capabilities of the databases. This chapter describes how to synchronize data from a MySQL database to CSS to accelerate full-...