Java实现ES嵌套分组查询类似于如下sql语句:select field1, field2, sum(field3) from table_name group by field1, field2;
ES的格式:
"visit": {
"type": "nested",
"properties": {
"visitId": {
"type": "keyword"
},
"visitDate": {
"type": "keyword"
},
"visit_end_date": {
"type": "keyword"
},
"person": {
"type": "nested",
"properties": {
"pId": {
"type": "keyword"
},
"pName": {
"type": "keyword"
},
"gender": {
"type": "keyword"
},
"gender_code": {
"type": "keyword"
},
"birthday": {
"type": "keyword"
},
}
},
"diagnosis": {
"type": "nested",
"properties": {
"dId": {
"type": "keyword"
},
"dtypeCode": {
"type": "keyword"
}
}
}
}