This week, we at MongoDB are so very proud to announce that we have added an offering featured in the latest iteration of the Pack. MongoDB Atlas is a great match for the Student Developer Pack in large part because it enables students to launch, manage and scale their databases with ...
I just got access to MongoDB free certificate and credits with my verified student pack developer account. However, it’s not clear to me what steps I should take to make the most of these benefits and how to use them. T…
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> db.inventory.distinct(“item.sku”)//获取item子字段sku的不重复值 结果:[“111”,”222”,”333”] >db.inventory.distinct(“sizes”)//获取数组格式字段的不重复值 结果:[“M”,”S”,”L”] >db.inventory.distinct(“item.sku”,{dept:”A”})//满足dept为A数据的item字段的子字段的不重复...
Do you offer a student discount? Absolutely!Fill out this formwith some proof that you are a student and I'll send you a discount code. This applies to anyone in any type of schooling, including evening classes and coding bootcamps!
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functionprintStudents(startValue,nPerPage){letendValue=null;db.students.find({_id:{$lt:startValue}}).sort({_id:-1}).limit(nPerPage).forEach(student=>{print(student.name);endValue=student._id;});returnendValue;} 升序 _id升序, 下一页的id比上一页的最后一条记录id还大。
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I got sent a fun JavaScript question from a student. It was fun for two reasons. They were clearly engaged and trying to figure stuff out on their own and they were just beyond basic syntax issues. The student wanted to know why this code worked: ...
20.3node-express-mongodb-blog-FE 是一个基于Node.js、Express和MongoDB构建的博客前端应用程序。它具有简洁的用户界面和友好的用户体验,能够展示博客文章、管理用户评论以及进行用户身份验证等功能。通过这个应用程序,用户可以轻松地创建、编辑和删除博客文章,并与其他用户进行交流和互动。该应用程序的前端设计注重响应式...