Sorting your data
Data in Elasticsearch is by default sorted by a relevance score, which is computed using the Lucene scoring formula, TF/IDF. This relevance score is a floating point value that is returned with search results inside the _score parameter. By default, results are sorted in descending order.
Note
Sorting on nested and geo-points fields will be covered in the upcoming chapters.
See the following query for an example:
{
"query": {
"match": {
"text": "data analytics"
}
}
}We are searching for tweets that contain the data or analytics terms in their text fields. In some cases, however, we do not want the results to be sorted based on _score. Elasticsearch provides a way to sort documents in various ways. Let's explore how this can be done.
Sorting documents by field values
This section covers the sorting of documents based on the fields that contain a single value such as created_at, or followers_count. Please note that we are not talking about sorting string-based...