elasticsearch 去重复查询总条数（用户聚合查询总条数）

GET /work_order_olap/_search
{
  "size": 0, 
  "query": {
    "bool": {
      "must": [{"range":{"plan_begin_date":{"gte":"2016-04-01","lte":"2020-04-30"}}},{"term":{"repair_type":"repair_maintenance"}},{"terms":{"train_no":["2641"]}},{"terms":{"fault_object_1":["供风及制动系统"]}},{"term":{"repair_place":"委外修"}}]
    }
  },
  "aggs": {
    "total": {
      "cardinality": {
        "script": "doc['material_no']+ '-' + doc['material_name'] + '-' + doc['material_category']"
      }
    }
  }
}