创建Index
curl -X PUT http://xxx:9200/demo_index
写入数据
curl -X PUT http://xxx:9200/demo_index/demo_type/[id] -d '{jsondata}'
查看字段及结构 _mapping
curl -X GET http://xxx:9200/demo_index/_mapping
curl -X GET http://xxx:9200/demo_index/demo_type/_mapping
查询信息 _cat
curl -X GET http://xxx:9200/_cat/demo_index/
curl -X GET http://xxx:9200/_cat/demo_index/demo_type/
查总数 _count
curl -XGET 'localhost:9200/_count?pretty'
带不带value的查询的区别
term 查询
{
"query": {
"term": {
"id": 123
}
}
}
terms 查询
{
"query": {
"terms": {
"id": [
7887813,
6450174,
17103990,
28042521,
5885609,
28997931
]
}
}
}
查询有值
{
"query": {
"wildcard":{
"name":"*"
}
}
}
查询无值(包括空字符串)
{
"query": {
"must_not" : {
"name":{
"wildcard":"*"
}
}
}
}
且关系
{
"must" : {
"name" : {
"term":"李"
},
"sex" : {
"term":"男"
}
}
}
上面等同于: where name = ‘李’ and sex = ‘男’
{
"must" : {
"name" : {
"term":"李"
}
},
"must_not" : {
"sex":{
"term":"女"
}
}
}
上面等同于: where name = '李' and sex <> '女'
所以同级别的,是 and 关系。
或关系
{
"shold": {
"name": {
"term": "李"
},
"sex": {
"term": "男"
}
}
}
等同于 where name = ‘李’ or sex = '男'
且和或的关系
{
"must" : {
"name" : {
"term":"李"
}
},
"shold": {
"age": {
"term": "18"
},
"sex": {
"term": "女"
}
}
}
等同于: where name = '李' and (age = 18 or sex = '女')
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