# 动态映射嵌套结构问题

**URL:** <https://discuss.elastic.co/t/topic/126410>\
**Category:** 中文提问与讨论\
**Created:** [April 2, 2018, 9:48am UTC](https://discuss.elastic.co/t/topic/126410 "2018-04-02T09:48:47Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![shenfl](https://avatars.discourse-cdn.com/v4/letter/s/7993a0/32.png) [@shenfl](https://discuss.elastic.co/u/shenfl)\
**Post date:** [April 2, 2018, 9:48am UTC](https://discuss.elastic.co/t/topic/126410/1 "2018-04-02T09:48:48Z")

</div>

直接插入一条数据，自动创建索引和mapping：  
PUT /my\_index/my\_type/1  
{  
"aa.bb": "cc"  
}  
但是自动创建的mapping却是嵌套的结构：  
{  
"my\_type": {  
"properties": {  
"aa": {  
"properties": {  
"bb": {  
"type": "text",  
"fields": {  
"keyword": {  
"ignore\_above": 256,  
"type": "keyword"  
}  
}  
}  
}  
}  
}  
}  
}  
怎么能让它的mapping不是嵌套的？  
我希望生成类似这样的：  
{  
"my\_type": {  
"properties": {  
"aa.bb": {  
"type": "keyword"  
}  
}  
}  
}

---

<div class="post-metadata">

**Author:** ![medcl.net](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/medcl.net/32/4414_2.png) [@medcl.net](https://discuss.elastic.co/u/medcl.net)\
**Post date:** [April 10, 2018, 9:02am UTC](https://discuss.elastic.co/t/topic/126410/2 "2018-04-10T09:02:32Z")

</div>

> [@shenfl](#):
>
> PUT /my\_index/my\_type/1
> 
> {
> 
> "aa.bb": "cc"
> 
> }

如果是旧版本还能支持，新的版本已经不支持了，详细的文档可参见：

> **[Dots in field names | Elasticsearch Guide \[2.4\] | Elastic](https://www.elastic.co/guide/en/elasticsearch/reference/2.4/dots-in-names.html)**

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [May 8, 2018, 9:02am UTC](https://discuss.elastic.co/t/topic/126410/3 "2018-05-08T09:02:37Z")

</div>

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