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When you perform a cardinality aggregation in Elasticsearch, it counts the number of unique values in a specified field across all documents in the index. Here’s how it works: 1. Elasticsearch analyzes the field: Before performing the cardinality aggregation, Elasticsearch first analyzes the specified field in all of the documents to extract the distinct values. … Read more

A cardinality aggregation in Elasticsearch is an aggregation that returns the number of unique values for a specified field. It allows you to count the number of distinct values in the field across all the documents in the index. When you perform a cardinality aggregation, you specify the field to be counted, and Elasticsearch returns … Read more

When you perform a top hits aggregation in Elasticsearch, it returns a specified number of top hits from each bucket of documents that have been grouped by another aggregation. Here’s how it works: 1. Elasticsearch applies the input aggregation: Before performing the top hits aggregation, Elasticsearch first applies the specified input aggregation to the index … Read more

A top hits aggregation in Elasticsearch is an aggregation that returns a specified number of top hits from each bucket of documents. It allows you to retrieve the most relevant or important documents from a group of documents that have been bucketed using another aggregation. When you perform a top hits aggregation, you specify the … Read more

When you perform a histogram aggregation in Elasticsearch, it groups documents into a set of buckets based on a numeric field and returns the number of documents in each bucket. Here’s how it works: 1. Elasticsearch analyzes the numeric field: Before performing the histogram aggregation, Elasticsearch first analyzes the specified numeric field in all of … Read more

A histogram aggregation in Elasticsearch is a way to aggregate and group numerical data into a set of buckets, each representing a range of values. It allows you to group documents based on the value of a numeric field, such as the price of a product or the age of a customer. When you perform … Read more

When you perform a date range aggregation in Elasticsearch, it groups documents based on a range of dates and returns the number of documents in each range. Here’s how it works: 1. Elasticsearch analyzes the date field: Before performing the date range aggregation, Elasticsearch first analyzes the specified date field in all of the documents … Read more

A date range aggregation in Elasticsearch is a way to aggregate and group documents based on a range of dates. It allows you to group documents into buckets based on the value of a date field, such as a timestamp or a date of birth. When you perform a date range aggregation, you specify one … Read more

When you perform a filter aggregation in Elasticsearch, it filters the documents in a search result set based on a specific criteria, and then performs an aggregation on the filtered documents. Here’s how it works: 1. Elasticsearch applies the search query: Before performing the filter aggregation, Elasticsearch first applies the specified search query to the … Read more

A filter aggregation in Elasticsearch is a way to filter the documents in a search result set based on a specific criteria, and then perform an aggregation on the filtered documents. It allows you to perform an aggregation on a subset of the documents in the index, rather than on the entire index. When you … Read more