elasticsearch的基本操作5

#delete-by-query 删除查询内容
POST /novel/_delete_by_query
{
"query":{
"regexp": {
"name": "鬼吹灯[0-9]?"
}
}
}
#查询name可能为鬼吹灯或鬼吹灯2
#作者不是萧鼎2
#descr包含嘻嘻和哈哈
#bool查询
POST /novel/_search
{
"query":{
"bool": {
"should": [
{
"term": {
"name": {
"value": "鬼吹灯"
}
}
},
{
"term": {
"name": {
"value": "鬼吹灯2"
}
}
}
],
"must_not": [
{
"term": {
"author": {
"value": "萧鼎2"
}
}
}
],
"must": [
{
"match": {
"descr": "嘻嘻"
}
},
{
"match": {
"descr": "哈哈"
}
}
]
}
}
}

test2026-08-13 15:56

#boosting查询
POST /novel/_search
{
"query": {
"boosting": {
"positive": {#匹配查询结果集
"match": {
"descr": "嘻嘻"
}
},
"negative": {#匹配上positive后又匹配negative
"match": {
"descr": "哈哈"
}
},
"negative_boost": 0.2#将分数乘以系数
}
}
}
#filter查询
POST /novel/_search
{
"query": {
"bool": {
"filter": [
{
"match": {
"descr": "嘻嘻"
}
},
{
"range": {
"count": {
"lte": 1000000,
"gte": 10
}
}
}
]
}
}
}

#highlight查询
POST /novel/_search
{
"query": {
"match": {
"descr": "嘻嘻"
}
},
"highlight": {
"fields": {
"descr":{}
},
"post_tags": "</em>",
"pre_tags": "<em>",
"fragment_size":10
}
}

test2026-08-13 16:17

#去重计数
#cardinality 不能直接用在 text 字段上，ES 会直接报错。
POST /novel/_search
{
"aggs": {
"qwe": {
"cardinality": {
"field": "author"
}
}
}
}
结果中包含：

"aggregations": {
"qwe": {
"value": 9
}
}

test2026-08-13 16:29

test2026-08-13 16:33

elasticsearch的基本操作5

最近发表主题