ElasticSearch 8.11 基本操作练习-Toy模板网

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ES 8.0 默认把type给去掉了

新增/编辑

PUT /index/id 幂等操作必须指定id 同一个id为修改

POST /index/id 非幂等操作指定id时和put操作一样不指定id 每次都会新增 id为系统随机分配

删除

DELETE /index 删除整个索引

DELETE /index/_doc/id 删除指定document

查询

GET /index/_search 不带条件查询所有

GET /index/_doc/id 查询指定document

复杂查询练习

批量导入一批数据
POST /atguigu/_bulk
{"index":{"_id":1}}
{ "title":"小米手机", "images":"http://image.jd.com/12479122.jpg", "price":1999, "stock": 200, "attr": { "category": "手机", "brand": "小米" } }
{"index":{"_id":2}}
{"title":"超米手机", "images":"http://image.jd.com/12479122.jpg", "price":2999, "stock": 300, "attr": { "category": "手机", "brand": "小米" } }
{"index":{"_id":3}}
{ "title":"小米电视", "images":"http://image.jd.com/12479122.jpg", "price":3999, "stock": 400, "attr": { "category": "电视", "brand": "小米" } }
{"index":{"_id":4}}
{ "title":"小米笔记本", "images":"http://image.jd.com/12479122.jpg", "price":4999, "stock": 200, "attr": { "category": "笔记本", "brand": "小米" } }
{"index":{"_id":5}}
{ "title":"华为手机", "images":"http://image.jd.com/12479122.jpg", "price":3999, "stock": 400, "attr": { "category": "手机", "brand": "华为" } }
{"index":{"_id":6}}
{ "title":"华为笔记本", "images":"http://image.jd.com/12479122.jpg", "price":5999, "stock": 200, "attr": { "category": "笔记本", "brand": "华为" } }
{"index":{"_id":7}}
{ "title":"荣耀手机", "images":"http://image.jd.com/12479122.jpg", "price":2999, "stock": 300, "attr": { "category": "手机", "brand": "华为" } }
{"index":{"_id":8}}
{ "title":"oppo手机", "images":"http://image.jd.com/12479122.jpg", "price":2799, "stock": 400, "attr": { "category": "手机", "brand": "oppo" } }
{"index":{"_id":9}}
{ "title":"vivo手机", "images":"http://image.jd.com/12479122.jpg", "price":2699, "stock": 300, "attr": { "category": "手机", "brand": "vivo" } }
{"index":{"_id":10}}
{ "title":"华为nova手机", "images":"http://image.jd.com/12479122.jpg", "price":2999, "stock": 300, "attr": { "category": "手机", "brand": "华为" } }

# 匹配所有
GET /atguigu/_search
{
"query": {
"match_all": {}
}
}

# 条件匹配如果是字符串会进行分词拆分查询出所有的包含分词的数据
GET /atguigu/_search
{
"query": {
"match": {
"title": "小米手机"
}
}
}

# 条件匹配分词拆分走and查询查询出包含所有分词的数据
GET /atguigu/_search
{
"query": {
"match": {
"title": {
"query": "小米手机",
"operator": "and"
}
}
}
}

# 子属性匹配
GET /atguigu/_search
{
"query": {
"match": {
"attr.brand": "小米"
}
}
}

# 多字段匹配
GET /atguigu/_search
{
"query": {
"multi_match": {
"query": "小米",
"operator": "and",
"fields": ["title","attr.brand.keyword"]
}
}

}

# 词条查询精确查询
GET /atguigu/_search
{
"query": {
"term": {
"price": {
"value": "4999"
}
}
}
}

# 范围查询
GET /atguigu/_search
{
"query": {
"range": {
"price": {
"gte": 3000,
"lte": 3999
}
}
}
}

# 组合查询 `bool`把各种其它查询通过`must`（与）、`must_not`（非）、`should`（或）的方式进行组合一个组合查询里面只能出现一种组合，不能混用
GET /atguigu/_search
{
"query": {
"bool": {
"should": [
{
"range": {
"price": {
"gte": 3000,
"lte": 3999
}
}
},
{
"range": {
"price": {
"gte": 4000,
"lte": 4999
}
}
}
]
}
}
}

组合嵌套查询 should 和must 并列存在 should不生效所以使用嵌套bool query的方式

GET /atguigu/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"title": "小米手机"
}
},
{
"bool": {
"should": [
{
"range": {
"price": {
"gte": 4000,
"lte": 5000
}
}
},
{
"range": {
"price": {
"gte": 3999,
"lte": 3999
}
}
}
]
}
}
]
}
}
}

# 过滤过滤条件不想对结果评分产生影响可以使用过滤对查询结果进行过滤 `filter`中还可以再次进行`bool`组合条件过滤。
GET /atguigu/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"title": "小米"
}
},
{
"match": {
"price": "4999"
}
}
],
"filter": [
{
"range": {
"price": {
"gte": 3000,
"lte": 4999
}
}
}
]
}
}
}

# 排序
GET /atguigu/_search
{
"query": {
"match": {
"title": "小米手机"
}
},
"sort": [
{
"price": {
"order": "desc"
}
},
{
"stock": {
"order": "desc"
}
}
]
}

# 分页
GET /atguigu/_search
{
"query": {
"match": {
"attr.brand": "小米手机"
}
},
"from": 0,
"size": 2
}

# 高亮
GET /atguigu/_search
{
"query": {
"match": {
"attr.category": {
"query": "笔记本",
"operator": "and"
}
}
},
"highlight": {
"fields": {
"attr.category": {}
},
"pre_tags": "<em>",
"post_tags": "</em>"
}
}

# 结果字段过滤
GET /atguigu/_search
{
"_source": ["title","price","attr"],
"query": {"match": {
"price": "3999"
}}
}

GET /atguigu/_search

# 聚合成桶 "size": 0, ## 不关心查询多少条数据只关心聚合结果
GET /atguigu/_search
{
"size": 0,
"aggs": {
"brands": {
"terms": {
"field": "attr.brand.keyword"
}
}
}
}

# 桶内度量
GET /atguigu/_search
{
"size": 0,
"aggs": {
"brand": {
"terms": {
"field": "attr.brand.keyword"
},
"aggs": {
"avg_price": {
"avg": {
"field": "price"
}
}
}
}
}
}

# 桶内嵌套桶
GET /atguigu/_search
{
"size": 0,
"aggs": {
"brand": {
"terms": {
"field": "attr.brand.keyword"
},
"aggs": {
"avg_price": {
"avg": {
"field": "price"
}
},
"categorys": {
"terms": {
"field": "attr.category.keyword"
}
}
}
}
}
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