我是 Elastic Search 查询和聚合的新手。我的嵌套文档具有以下映射。
PUT /company
{
"mappings": {
`"data": {
"properties": {
"deptId": {
"type": "keyword"
},
"deptName": {
"type": "keyword"
},
"employee": {
"type": "nested",
"properties": {
"empId": {
"type": "keyword"
},
"empName": {
"type": "text"
},
"salary": {
"type": "float"
}
}}}}}}
我已经插入了以下示例数据。
PUT company/data/1
{
"deptId":"1",
"deptName":"HR",
"employee": [
{
"empId": "1",
"empName": "John",
"salary":"1000"
},
{
"empId": "2",
"empName": "Will",
"salary":"2000"
}
]}
PUT company/data/3
{
"deptId":"3",
"deptName":"FINANCE",
"employee": [
{
"empId": "1",
"empName": "John",
"salary":"1000"
},
{
"empId": "2",
"empName": "Will",
"salary":"2000"
},
{
"empId": "3",
"empName": "Mark",
"salary":"4000"
}]
}
我该如何为以下内容构建一个查询DSL:
- 拥有最多员工的部门
- 在大部分部门中出现的员工