批量导入数据
ES 提供了一个叫 bulk 的 API 来进行批量操作
在ES安装目录下新建一个文件，文件名可以自定义，这里是player
文件内容如下：
{"index":{"_index":"nba","_type":"_doc","_id":"1"}}
{"countryEn":"United States","teamName":"老鹰","birthDay":831182400000,"country":"美国","teamCityEn":"Atlanta","code":"jaylen_adams","displayAffiliation":"United States","displayName":"杰伦 亚当斯","schoolType":"College","teamConference":"东部","teamConferenceEn":"Eastern","weight":"86.2 公斤","teamCity":"亚特兰大","playYear":1,"jerseyNo":"10","teamNameEn":"Hawks","draft":2018,"displayNameEn":"Jaylen Adams","heightValue":1.88,"birthDayStr":"1996-05-04","position":"后卫","age":23,"playerId":"1629121"}
{"index":{"_index":"nba","_type":"_doc","_id":"2"}}
{"countryEn":"New Zealand","teamName":"雷霆","birthDay":743140800000,"country":"新西兰","teamCityEn":"Oklahoma City","code":"steven_adams","displayAffiliation":"Pittsburgh/New Zealand","displayName":"斯蒂文 亚当斯","schoolType":"College","teamConference":"西部","teamConferenceEn":"Western","weight":"120.2 公斤","teamCity":"俄克拉荷马城","playYear":6,"jerseyNo":"12","teamNameEn":"Thunder","draft":2013,"displayNameEn":"Steven Adams","heightValue":2.13,"birthDayStr":"1993-07-20","position":"中锋","age":26,"playerId":"203500"}
注意：最后需要空一行
执行以下命令，可以将文件里的数据批量导入
curl -X POST "localhost:9200/_bulk" -H "Content-Type: application/json" --data-binary @player
ES 之 term 的多种查询
单词级别查询：这些查询通常用于结构化的数据，比如：number, date, keyword 等，而不是对 text。也就是说，全文本查询之前要先对文本内容进行分词，而单词级别的查询直接在相应字段的反向索引中精确查找，单词级别的查询一般用于数值、日期等类型的字段上。
准备工作
- 删除nba索引
- 新增nba索引
-
POST：localhost:9200/nba/_mapping { "properties":{ "birthDay":{ "type":"date" }, "birthDayStr":{ "type":"keyword" }, "age":{ "type":"integer" }, "code":{ "type":"text" }, "country":{ "type":"text" }, "countryEn":{ "type":"text" }, "displayAffiliation":{ "type":"text" }, "displayName":{ "type":"text" }, "displayNameEn":{ "type":"text" }, "draft":{ "type":"long" }, "heightValue":{ "type":"float" }, "jerseyNo":{ "type":"text" }, "playYear":{ "type":"long" }, "playerId":{ "type":"keyword" }, "position":{ "type":"text" }, "schoolType":{ "type":"text" }, "teamCity":{ "type":"text" }, "teamCityEn":{ "type":"text" }, "teamConference":{ "type":"keyword" }, "teamConferenceEn":{ "type":"keyword" }, "teamName":{ "type":"keyword" }, "teamNameEn":{ "type":"keyword" }, "weight":{ "type":"text" } } } - 批量导入数据（player文件）
Term query
精准匹配查询（查找号码为23的球员）
POST：localhost:9200/nba/_search
{
"query": {
"term": {
"jerseyNo": "23"
}
}
}
Exsit Query
在特定的字段中查找非空值的文档（查找队名非空的球员）
POST：localhost:9200/nba/_search
{
"query": {
"exists": {
"field": "teamNameEn"
}
}
}
Prefix Query
查找包含带有指定前缀 term 的文档（查找队名以Rock开头的球员）
POST：localhost:9200/nba/_search
{
"query": {
"prefix": {
"teamNameEn": "Rock"
}
}
}
Wildcard Query
支持通配符查询，*表示任意字符，?表示任意单个字符（查找火箭队的球员）
POST：localhost:9200/nba/_search
{
"query": {
"wildcard": {
"teamNameEn": "Ro*s"
}
}
}
Regexp Query
正则表达式查询（查找火箭队的球员）
POST：localhost:9200/nba/_search
{
"query": {
"regexp": {
"teamNameEn": "Ro.*s"
}
}
}
Ids Query
id 查询（查找id为1和2的球员）
POST：localhost:9200/nba/_search
{
"query": {
"ids": {
"values": [1,2]
}
}
}
ES 的范围查询
查找指定字段在指定范围内包含值（日期、数字或字符串）的文档。
查找在nba打了2年到10年以内的球员
POST：localhost:9200/nba/_search
{
"query": {
"range": {
"playYear": {
"gte": 2,
"lte": 10
}
}
}
}
查找1980年到1999年出生的球员
POST：localhost:9200/nba/_search
{
"query": {
"range": {
"birthDay": {
"gte": "01/01/1999",
"lte": "2022",
"format": "dd/MM/yyyy||yyyy"
}
}
}
}
ES 的布尔查询
- must：必须出现在匹配文档中
- filter：必须出现在文档中，但是不打分
- must_not：不能出现在文档中
- should：应该出现在文档中
must
查找名字叫做 James 的球员
POST：localhost:9200/nba/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"displayNameEn": "james"
}
}
]
}
}
}
filter
效果同 must，但是不打分（查找名字叫做 James 的球员）
must_not
查找名字叫做 James 的西部球员
POST：localhost:9200/nba/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"displayNameEn": "james"
}
}
],
"must_not": [
{
"term": {
"teamConferenceEn": {
"value": "Eastern"
}
}
}
]
}
}
}
should
即使匹配不到也返回，只是评分不同
查找名字叫做James的打球时间应该在11到20年西部球员
POST：localhost:9200/nba/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"displayNameEn": "james"
}
}
],
"must_not": [
{
"term": {
"teamConferenceEn": {
"value": "Eastern"
}
}
}
],
"should": [
{
"range": {
"playYear": {
"gte": 11,
"lte": 20
}
}
}
]
}
}
}
如果 minimum_should_match=1，则变成要查出名字叫做 James 的打球时间在11到20年西部球员
POST：localhost:9200/nba/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"displayNameEn": "james"
}
}
],
"must_not": [
{
"term": {
"teamConferenceEn": {
"value": "Eastern"
}
}
}
],
"should": [
{
"range": {
"playYear": {
"gte": 11,
"lte": 20
}
}
}
],
"minimum_should_match": 1
}
}
}
来源：https://www.cnblogs.com/jwen1994/p/12639827.html