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25 lines
1.7 KiB
Markdown
25 lines
1.7 KiB
Markdown
---
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layout: default
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title: Span queries
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parent: Query DSL
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nav_order: 60
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permalink: /query-dsl/span-query/
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redirect_from:
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- /opensearch/query-dsl/span-query/
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---
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# Span queries
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You can use span queries to perform precise positional searches. Span queries are low-level, specific queries that provide control over the order and proximity of specified query terms. They are primarily used to search legal documents and patents.
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Span queries include the following query types:
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- **Span containing**: Wraps a list of span queries and only returns spans that match a second span query.
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- **Span field masking**: Combines `span_near` or `span_or` across different fields.
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- **Span first**: Matches spans close to the beginning of the field.
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- **Span multi-term**: Provides a wrapper around the following query types: `term`, `range`, `prefix`, `wildcard`, `regexp` or `fuzzy`.
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- **Span near**: Matches spans that are near each other. Wraps multiple span queries that must match within the specified `slop` distance of each other, and optionally in the same order. Slop represents the maximum number of intervening unmatched positions and indicates whether matches are required to be returned in order.
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- **Span not**: Provides a wrapper for another span query and excludes any documents that match the internal query.
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- **Span or**: Provides a wrapper for multiple span queries and includes any documents that match any of the specified queries.
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- **Span term**: Functions in the same way as a `term` query, but is designed to be used with other span queries.
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- **Span within**: Used with other span queries to return a single span query if its span is within the spans that are returned by a list of other span queries. |