Elasticsearch POST /orderparent/_search - 查询具有特定userName的父订单

The given query is requesting to search for documents in the "orderparent" index. It is looking for documents that have a parent document of type "parent" and have a "userName" field with the value "zhangjie".\n\nThe mapping of the "orderparent" index includes two types: "parent" and "child". The "parent" type has properties such as "createTime", "orderNum", and "userName". The "child" type has properties such as "commentTime", "content", and "userId".\n\nThe "relation" field is of type "join" and is used to establish a parent-child relationship between documents. The "relations" property specifies that the "parent" type is related to the "child" type.