使用c# nest client实现elasticsearch空数组搜索查询

using Nest;

var settings = new ConnectionSettings(new Uri("http://localhost:9200"));
var client = new ElasticClient(settings);

var searchRequest = new SearchRequest<YourDocumentType>
{
    Index = "your_index",
    Type = "your_type"
};

searchRequest.Query = new BoolQuery
{
    Must = new List<QueryContainer>
    {
        new ExistsQuery
        {
            Field = "your_array_field",
            Field = "must_not"
        }
    }
};

var searchResponse = client.Search<YourDocumentType>(searchRequest);

if (searchResponse.IsValid)
{
    foreach (var hit in searchResponse.Hits)
    {
        Console.WriteLine(hit.Source);
    }
}