Writing compound queries

This class of queries can be used to combine one or more queries to come up with a more complex query. Some compound queries convert scoring queries into non-scoring queries and combine multiple scoring and non-scoring queries.

We will look at the following compound queries:

• Constant score query
• Bool query

Constant score query

Elasticsearch supports querying both structured data and full text. While full-text queries need scoring mechanisms to find the best matching documents, structured searches don't need scoring. The constant score query allows us to convert a scoring query that normally runs in a query context to a non-scoring filter context. The constant score query is a very important...