By default, field values areindexedto make them searchable, but they are notstored. This means that the field can be queried, but the original field value cannot be retrieved. Usually this doesn’t matter. The field value is already part of the_source, which is stored by default. If you...
for (Map.Entry<String, ?> value : values.entrySet()) { field(value.getKey()); // pass ensureNoSelfReferences=false as we already performed the check at a higher level unknownValue(value.getValue(), false); } endObject(); return this; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. ...
{"yourtype":{"_source":{"enabled":false},"properties": { ... } } } 如果只想存储某几个字段的原始值到Elasticsearch,可以通过incudes参数来设置,在mapping中的设置如下: {"yourtype":{"_source":{"includes":["field1","field2"] },"properties": { ... } } } 同样,可以通过excludes参数排除...
PUT my_index{"mappings":{"my_type":{"properties":{"title":{"type":"text","store":true },"date":{"type":"date","store":true },"content":{"type":"text"}}}PUT my_index/my_type/1{"title":"Some short title","date":"2015-01-01","content":"A very long content field..."...
在一个index中,你可以存储任意多的文档 1.4 字段(Field) 相当于是数据表的字段,对文档数据根据不同属性进行的分类标识 1.5 映射(mapping) mapping是处理数据的方式和规则方面做一些限制,如:某个字段的数据类型、默认值、分析器、是否被索引等等。这些都是映射里面可以设置的,其它就是处理ES里面数据的一些使用规则设...
2. _source Field : 是Stored Fields 中的一个特殊的超大字段,包含该条文档输入时的所有业务字段的原始值。 (1)大部分特性同 Stored Fields。 (2)_source 字段是该行中的第一个存储字段。优先读取。 3. doc_value Fields:类似于大数据场景中的列存,按列存储,主要用于聚合跟排序等分析场景。 (1) 不同文档...
PUT my_index{"mappings":{"my_type":{"properties":{"session_id":{"type":"string","index":"not_analyzed","doc_values":false"index":"true"//默认就为true}}} 2. FieldData 我们之前说过,分词的字段不适合分词,如果对分词的字段进行聚合结果很可能会出乎意料。比如下边这个例子。 POST...
faster than retrieving the entire _source and extracting that field from it,especially when you have large documents.NOTEWhen you store individual fieldsaswell,you should take into account that the more you store,the bigger your index gets.Usually bigger indices imply slower indexing and slower ...
false New fields are ignored. These fields will not be indexed or searchable, but will still appear in the _source field of returned hits. These fields will not be added to the mapping, and new fields must be added explicitly. 若设置为false,如果你的字段没有在es的mapping中创建,那么新的字...
put http://服务器ip:9200/索引库名称 #注意不能使用post{"settings":{"index":{"number_of_shards":1,"number_of_replicas":0} } } 下面使用postman创建的例子 第二种:使用es_head创建 二、创建映射 1.概念说明: 在索引中每个文档都包括了一个或多个field(一行记录中包含一个或多个字段),创建映射就...