opensearch-docs-cn/_query-dsl/query-dsl/compound/index.md

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default	Compound queries	Query DSL	true	40	/query-dsl/compound/	/opensearch/query-dsl/compound/index/

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 boost value.
• 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 positive query, but downgrades the relevance of documents in the results that match a negative query.