ElasticSearch 使用问题

1.设置空格分词器

PUT /my_index/my_type/_mapping
{
"my_type": {
"_all": { "analyzer": "whitespace" }
}
}

 2.聚合并排序

3.空字符条件term不起作用，或者false不起作用，处理方法

4.如何像sql一样使用in 或者not in

in

var a = new long[] { 122223, 122221, 122220 };
query.Add(q => q.Terms(m1 => m1.Field("MerId").Terms(a)));

not in

var a = new long[] { 122223, 122221, 122220 };
selector.Query(o => o.Bool(b => b.MustNot(a)));

 5.在原有索引中增加列

curl -XPUT "http://192.168.1.216:9200/deals.info/_mapping/info" -d '{
    "properties": {
"StartDate" : {"type": "date"},
"EndDate" : {"type": "date"}
}
}
'

 6. nest es中使用日期查询，注意.ToString("o")是必须的，因为es中默认存储的是国际标准时间带了T

SearchDescriptor<object> selector = new SearchDescriptor<object>();
List<Func<QueryContainerDescriptor<object>, QueryContainer>> query = new List<Func<QueryContainerDescriptor<object>, QueryContainer>>();
//一个月之内的搜索记录
query.Add(q => q.DateRange(t => t.Field("UpdateDate").GreaterThanOrEquals(DateMath.FromString(DateTime.UtcNow.AddMonths(-1).ToString("o", CultureInfo.InvariantCulture)))));
//合并条件
selector.Query(o => o.Bool(b => b.Must(query.ToArray())));

 7.es.net nest部分更新

8.查看分词

curl -XGET 'http://192.168.1.216:9200/seller.archived.track.002/_analyze?analyzer=ik_max_word&pretty'

 9.es新增内嵌属性

curl -XPUT "http://192.168.1.216:9200/deals.product.develop/_mapping/info" -d '
{
    "properties": {
"CategoryList" : {
            "type": "nested",
            "properties" : {
              "CategoryActionType" : {
                "type" : "integer"
              },
              "FCategoryKey" : {
                "type" : "integer"
              }
            }
          }
}
}
'

10.es内嵌搜索脚本

curl -XGET "http://192.168.1.216:9200/deals.product.develop/info/_search?pretty" -d '
{
  "query": {
    "bool": {
      "must": [
        {
          "nested": {
            "path": "CategoryList",
            "query": {
              "bool": {
                "must": [
                  {
                    "term": {"CategoryList.FCategoryKey": "101002"}
                  },
                  {
                    "term": {"CategoryList.CategoryActionType": "3"}
                  }
                ]
              }
            }
          }
        }
      ]
    }
  }
}
'

11.c#中es内嵌搜索

query.Add(q => q.Nested(c=>c.Path("CategoryList").Query(nq=>nq.Terms(t => t.Field("CategoryList.FCategoryKey").Terms(101001, 101002)) && q.Terms(t => t.Field("CategoryList.CategoryActionType").Terms(1, 2)))));