【发布时间】：2021-10-28 08:41:18
【问题描述】：
我正在查询一个 ElasticSearch 数据库。我的文件结构如下：
{
"uuid": "5035732b-9ba8-4cf7-96a7-6d1c7e179fec",
"name": "LTK_1604d0",
"recording_datetime": "2021-10-10T08:08:13",
"stopped_recording_datetime": "2021-10-11T06:53:12",
"created": "2021-10-11T17:25:16.754278",
"source": "U",
"file": "ISO-XML_LTK_15f407_LTK_15f9a0_LTK_15fc07_LTK_15fed7_LTK_15ffcb (1).zip",
"data_format": "p",
"data_type": "ISOBUS",
"data_set_rois": [],
"dataset_measurements": [
{
"id": 1995250,
"index": 2,
"name": "iso_013A",
"unit": "%",
"device": "49700062",
"code": "iso_013A",
"count": 8067,
"std": 21.233523112224,
"min": 0.0,
"max": 55.0,
"mean": 18.4815544812198,
"percentiles": [
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
40.0,
40.5,
40.7,
41.0,
41.5,
42.2,
43.3,
45.8
],
"prio": 1
},
{
"id": 1995248,
"index": 0,
"name": "iso_0054",
"unit": "t/ha",
"device": "49700062",
"code": "iso_0054",
"count": 8067,
"std": 37.4462960389206,
"min": 0.0,
"max": 412.41,
"mean": 26.6444713028387,
"percentiles": [
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
21.62,
47.329,
54.652,
58.21,
61.188,
64.041,
68.034,
79.57
],
"prio": 1
},
{
"id": 1995253,
"index": 5,
"name": "iso_E107+107",
"unit": "U/min",
"device": "49700062",
"code": "iso_E107+107",
"count": 8067,
"std": 617.86811828088,
"min": 0.0,
"max": 2129.0,
"mean": 1406.03780835503,
"percentiles": [
0.0,
0.0,
998.0,
999.0,
999.0,
1002.0,
1284.1,
1500.4,
1598.0,
1659.0,
1701.0,
1729.0,
1762.0,
1810.0,
1856.0,
1931.0,
1991.0,
2030.0,
2049.0
],
"prio": 2
},
{
"id": 1995252,
"index": 4,
"name": "iso_E104+107",
"unit": " ",
"device": "49700062",
"code": "iso_E104+107",
"count": 8067,
"std": 0.0,
"min": 52.0,
"max": 52.0,
"mean": 52.0,
"percentiles": [
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0,
52.0
],
"prio": 2
},
{
"id": 1995251,
"index": 3,
"name": "iso_018D",
"unit": "km/h",
"device": "49700062",
"code": "iso_018D",
"count": 8067,
"std": 9.64427850775535,
"min": 0.0,
"max": 45.07,
"mean": 6.29758894260568,
"percentiles": [
0.0,
0.0,
0.0,
0.0,
0.0,
0.22,
2.62,
3.66,
3.87,
3.98,
4.09,
4.2,
4.33,
4.49,
4.79,
6.69400000000001,
9.74299999999998,
18.872,
32.234
],
"prio": 2
},
{
"id": 1995249,
"index": 1,
"name": "iso_0057",
"unit": "t/h",
"device": "49700062",
"code": "iso_0057",
"count": 8067,
"std": 81.4727887924538,
"min": 0.0,
"max": 277.1,
"mean": 66.4214788645097,
"percentiles": [
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0,
64.5519999999999,
128.509,
153.67,
164.72,
171.156,
176.18,
181.524,
188.78
],
"prio": 2
}
],
"user": "test@test.nl",
"centroid": "POINT (54.423692227112667 7.45637103322727)",
"mappings": null
}
我想获取data_type = ISOBUS 和created starts with 2021 所在的所有文档文档。但是，当我尝试查询 created 字段时，无论我如何编写查询，它总是返回 0 个命中。我还必须在查询中添加关键字，否则服务器只会返回内部服务器错误。为什么查询中某些字段名要加关键字？
1.
{
"query": {
"prefix": { "created.keyword":"2021" }
}
}
2.
{
"query": {
"bool": {
"must": [{
"prefix": { "created.keyword":"2021" }
}]
}
}
}
3.
{
"query": {
"wildcard": {
"created.keyword": {"value": "2021*"}
}
}
}
4.
{
"query": {
"bool": {
"must": [
{ "term": { "data_type.keyword": "ISOBUS"} },
{ "prefix": { "created.keyword":"2021" } }]
}
}
}
【问题讨论】：
标签： elasticsearch dsl