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Elastic Docs ›Elasticsearch .NET Clients [7.16] ›Query DSL ›Term level queries

Regexp Query Usage

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Regexp Query Usage

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Fluent DSL example

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q
.Regexp(c => c
    .Name("named_query")
    .Boost(1.1)
    .Field(p => p.Description)
    .Value("s.*y")
    .Flags("INTERSECTION|COMPLEMENT|EMPTY")
    .MaximumDeterminizedStates(20000)
    .Rewrite(MultiTermQueryRewrite.TopTerms(10))
)

Object Initializer syntax example

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new RegexpQuery
{
    Name = "named_query",
    Boost = 1.1,
    Field = "description",
    Value = "s.*y",
    Flags = "INTERSECTION|COMPLEMENT|EMPTY",
    MaximumDeterminizedStates = 20000,
    Rewrite = MultiTermQueryRewrite.TopTerms(10)
}

Example json output.

{
  "regexp": {
    "description": {
      "_name": "named_query",
      "boost": 1.1,
      "flags": "INTERSECTION|COMPLEMENT|EMPTY",
      "max_determinized_states": 20000,
      "value": "s.*y",
      "rewrite": "top_terms_10"
    }
  }
}
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