如何使用 Spring Boot 中的特定日期范围和聚合从 MongoDB 数据库中检索数据？

Question

I am working on a spring boot project and using MongoDB as my database.

There is studentDB database which contains a student document and that documents contain the following fields:

_id , student_name, attend_lecture, iso_dom, iso_dow, iso_month, iso_year, iso_week".

student document

   _id             Object
   student_name    String
   attend_lecture  int
   iso_dom         int    date of the month ("1" January 2015)
   iso_dow         int    day of the week (Friday)
   iso_month       int    the month (1 stand for January)
   iso_year        int    year (2015)
   iso_week        int    week number (1)

Here I am trying to retrieve how many students attended lectures in the date range between 12 January 2015 to 13 March 2015?

Methods I have Tried:

1. I used the aggregation with less than and greater than clause in MongoDB.

2. I also used the date of the part clause while I retrieved all the dates between 12 January 2015 to 13 March 2015.

Problem: Is there any feasible way to retrieve how many students attended lectures in the date range between 12 January 2015 to 13 March 2015?

Example:

student document

  "_id":"5c1639b3a1b32bb04547137f",

  "student_name":"MR. Rahul"

  "iso_dom":12,

  "iso_dow":3,

  "iso_month":1,

  "iso_week":12,

  "isp_year":2018,

  "attend_lecture":5

Answer 1

插入新的关键日期，提供在两个日期之间选择文档的选项，并使用聚合函数检索在 2015 年 1 月 12 日至 2015 年 3 月 13 日之间的日期范围内有多少学生参加了讲座。