一,问题描述 数据格式: id, timeStamp,count 条件1:查询 某个时间段 内的数据: timeStamp BETWEEN startTime AND endTime.比如 timeStamp BETWEEN 1499875200 AND 1499875600 条件2:记录 的 id 字段 属于某集合: id IN (1001,1002,1003) 条件3:记录 的count字段 大于某个阈值,比如: count > 10000 二,代码实现 条件1实现如下, $gte (gr
1. gte: 代表的是大于等于,英文全称为:great than equal.举例:找到文章id大于等于3等文章,示例代码如下: 定义模型的示例代码如下: from django.db import models class Category(models.Model): name = models.CharField(max_length=100) class Meta: db_table = 'category' class Article(models.Model): title = m
查询表中学生年级大于20,如下: db.getCollection('student').find({'age':{'$gt':'20'}}) $lt < (less than ) $lte <= (less than or equal to ) $gt > (greater than ) $gte >= (greater than or equal to) $ne != (not equal to)不等于 {'age': {'
db.users.find() select * from users db.users.find({"age" : 27}) select * from users where age = 27 db.users.find({"username" : "joe", "age" : 27}) select * from users where "username" = "joe" and