课程大纲
1、为帖子数据增加浏览量的字段
POST /forum/article/_bulk
{ "update": { "_id": "1"} }
{ "doc" : {"view_cnt" : 30} }
{ "update": { "_id": "2"} }
{ "doc" : {"view_cnt" : 50} }
{ "update": { "_id": "3"} }
{ "doc" : {"view_cnt" : 100} }
{ "update": { "_id": "4"} }
{ "doc" : {"view_cnt" : 80} }
2、搜索浏览量在30~60之间的帖子
GET /forum/article/_search
{
"query": {
"constant_score": {
"filter": {
"range": {
"view_cnt": {
"gt": 30,
"lt": 60
}
}
}
}
}
}
gte
lte
3、搜索发帖日期在最近1个月的帖子
POST /forum/article/_bulk
{ "index": { "_id": 5 }}
{ "articleID" : "DHJK-B-1395-#Ky5", "userID" : 3, "hidden": false, "postDate": "2017-03-01", "tag": ["elasticsearch"], "tag_cnt": 1, "view_cnt": 10 }
GET /forum/article/_search
{
"query": {
"constant_score": {
"filter": {
"range": {
"postDate": {
"gt": "2017-03-10||-30d"
}
}
}
}
}
}
GET /forum/article/_search
{
"query": {
"constant_score": {
"filter": {
"range": {
"postDate": {
"gt": "now-30d"
}
}
}
}
}
}
4、梳理一下学到的知识点
（1）range，sql中的between，或者是>=1，<=1
（2）range做范围过滤
更详细的内容请查看视频教程：http://www.roncoo.com/course/view/f6c7d5f0eef34b20b280621e42facbcf
![images/4SfMrmxwkrDxQbk4TDs5mebzi82mxwwN.jpg]( "images/4SfMrmxwkrDxQbk4TDs5mebzi82mxwwN.jpg")
