es的六種搜索方式
- query string search
GET /ecommerce/product/_search //查詢所有數據
{
"took": 4,//耗費幾毫秒
"timed_out": false,//是否超時
"_shards": {//數據拆分成5個分片，對所有請求都會打到所有primary shared（或者是它的某個replica shared也可以）
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 1,//條數
"max_score": 1,//查詢匹配度
"hits": [
{
"_index": "ecommerce",
"_type": "product",
"_id": "2",
"_score": 1,
"_source": {
"name": "jiajieshi yagao",
"desc": "jiajieshi meibai",
"price": 30,
"producer": "jiajieshi producer",
"tags": [
"meibai",
"fangzhu"
]
}
}
]
}
}
GET /ecommerce/product/_search?q=name:yagao&sort=price:desc
-
query DSL
- DSL:Domain Specified Language:特定領域的語言
- http request body：請求體，用json格式構建查詢語法
GET /ecommerce/product/_search { "query": { "match": { "name": "yagao" //查詢包含單詞 } }, "_source": ["name","price"],//不寫查詢所有字段 "sort": [ { "price": { "order": "desc"//倒序排序 } } ], "from": 0,//分頁 "size": 1 } -
query filter
GET /ecommerce/product/_search
{
"query": {
"bool": {//多個條件
"must": [
{
"match": {
"name": "yagao"
}
}
],
"filter": {//過濾條件
"range": {
"price": {
"gte": 10,
"lte": 40
}
}
}
}
}
}
- full-text search
GET /ecommerce/product/_search
{
"query": {
"match": {
"producer": "lishi producer"//會查包含這兩個單詞的所有數據
}
}
}
{
"took": 5,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 4,
"max_score": 0.51623213,
"hits": [
{
"_index": "ecommerce",
"_type": "product",
"_id": "3",
"_score": 0.51623213,//匹配度最高
"_source": {
"name": "lishi yagao",
"desc": "lishi meibai",
"price": 50,
"producer": "lishi producer",
"tags": [
"meibai",
"fangzhu"
]
}
},
{
"_index": "ecommerce",
"_type": "product",
"_id": "1",
"_score": 0.25811607,
"_source": {
"name": "jiaqiangban gaolujie yagao2",
"desc": "gaoxiao meibai",
"price": 30,
"producer": "gaolujie producer",
"tags": [
"meibai",
"fangzhu"
]
}
},
{
"_index": "ecommerce",
"_type": "product",
"_id": "2",
"_score": 0.1805489,
"_source": {
"name": "jiajieshi yagao",
"desc": "jiajieshi meibai",
"price": 40,
"producer": "jiajieshi producer",
"tags": [
"meibai",
"fangzhu"
]
}
},
{
"_index": "ecommerce",
"_type": "product",
"_id": "4",
"_score": 0.14638957,
"_source": {
"name": "special yaogao",
"desc": "special meibai",
"price": 50,
"producer": "special yagao producer",
"tags": [
"meibai"
]
}
}
]
}
}
- phrase search
必須包含一模一樣的串，才會返回（包含短語的意思）
GET /ecommerce/product/_search
{
"query": {
"match_phrase": {
"producer": "yagao producer"
}
}
}
{
"took": 3,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 1,
"max_score": 0.70293105,
"hits": [
{
"_index": "ecommerce",
"_type": "product",
"_id": "4",
"_score": 0.70293105,
"_source": {
"name": "special yaogao",
"desc": "special meibai",
"price": 50,
"producer": "special yagao producer",
"tags": [
"meibai"
]
}
}
]
}
}
- highlight search
- 查詢到的結果高亮
GET /ecommerce/product/_search { "query": { "match_phrase": { "producer": "gaolujie producer" } }, "highlight": { "fields": { "producer": {} } } } { "took": 18, "timed_out": false, "_shards": { "total": 5, "successful": 5, "skipped": 0, "failed": 0 }, "hits": { "total": 1, "max_score": 0.51623213, "hits": [ { "_index": "ecommerce", "_type": "product", "_id": "1", "_score": 0.51623213, "_source": { "name": "jiaqiangban gaolujie yagao2", "desc": "gaoxiao meibai", "price": 30, "producer": "gaolujie producer", "tags": [ "meibai", "fangzhu" ] }, "highlight": { "producer": [ "<em>gaolujie</em> <em>producer</em>" ] } } ] } }
計算每個tag下的商品數量
- 將文本field的fielddata屬性設置為true
PUT /ecommerce/_mapping/product
{
"properties": {
"tags":{
"type": "text",
"fielddata": true
}
}
}
- 再運行下面才能查出來
GET /ecommerce/product/_search
{
"aggs": {
"group_by_tags": {
"terms": {
"field": "tags"
}
}
}
}
"aggregations": {
"group_by_tags": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [
{
"key": "fangzhu",
"doc_count": 3
},
{
"key": "meibai",
"doc_count": 3
},
{
"key": "suibian",
"doc_count": 1
}
]
}
}
對名稱中包含yagao的商品，計算每個tag下的商品數量
GET /ecommerce/product/_search
{
"query": {
"match": {
"name": "yagao"
}
},
"aggs": {
"group_by_tags": {
"terms": {
"field": "tags"
}
}
}
}
先分組，再計算每組的平均值，計算每個tag下的商品的平均價格
GET /ecommerce/product/_search
{
"size": 0,
"aggs": {
"group_by_tags": {
"terms": {
"field": "tags"
},
"aggs": {
"avg_price": {
"avg": {
"field": "price"
}
}
}
}
}
}
對上述結果按平均價格排序
GET /ecommerce/product/_search
{
"size": 0,
"aggs": {
"group_by_tags": {
"terms": {
"field": "tags",
"order": {
"avg_price": "desc"
}
},
"aggs": {
"avg_price": {
"avg": {
"field": "price"
}
}
}
}
}
}
按照指定的價格范圍區間進行分組，然后在每組內再按照tag進行分組，最后再計算每組的平均價格
GET /ecommerce/product/_search
{
"size": 0,
"aggs": {
"group_by_price": {
"range": {
"field": "price",
"ranges": [
{
"from": 0,
"to": 20
},
{
"from": 20,
"to": 40
},
{
"from": 40,
"to": 60
}
]
},
"aggs": {
"group_by_tags": {
"terms": {
"field": "tags"
},
"aggs": {
"avg_price": {
"avg": {
"field": "price"
}
}
}
}
}
}
}
}