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Compound queries
Compound queries serve as wrappers for multiple leaf or compound clauses either to combine their results or to modify their behavior.
OpenSearch supports the following compound query types:
- Boolean: Combines multiple query clauses with Boolean logic. To learn more, see Boolean queries.
- Constant score: Wraps a query or a filter and assigns a constant score to all matching documents. This score is equal to the
boostvalue. - Disjunction max: Returns documents that match one or more query clauses. If a document matches multiple query clauses, it is assigned a higher relevance score. The relevance score is calculated using the highest score from any matching clause and, optionally, the scores from the other matching clauses multiplied by the tiebreaker value.
- Function score: Recalculates the relevance score of documents that are returned by a query using a function that you define.
- Boosting: Changes the relevance score of documents without removing them from the search results. Returns documents that match a
positivequery, but downgrades the relevance of documents in the results that match anegativequery.