Menu
×
   ❮   
HTML CSS JAVASCRIPT SQL PYTHON JAVA PHP HOW TO W3.CSS C C++ C# BOOTSTRAP REACT MYSQL JQUERY EXCEL XML DJANGO NUMPY PANDAS NODEJS R TYPESCRIPT ANGULAR GIT POSTGRESQL MONGODB ASP AI GO KOTLIN SASS VUE DSA GEN AI SCIPY AWS CYBERSECURITY DATA SCIENCE
     ❯   

MongoDB 更新操作符


MongoDB 更新操作符

在文档更新期间可以使用许多更新操作符。

字段

以下操作符可用于更新字段

  • $currentDate:将字段值设置为当前日期
  • $inc:递增字段值
  • $rename:重命名字段
  • $set:设置字段的值
  • $unset:从文档中移除字段

数组

以下操作符有助于更新数组。

  • $addToSet:向数组添加不同的元素
  • $pop:移除数组的第一个或最后一个元素
  • $pull:移除与查询匹配的数组中的所有元素
  • $push:向数组添加元素

×

Contact Sales

If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail:
[email protected]

Report Error

If you want to report an error, or if you want to make a suggestion, send us an e-mail:
[email protected]

W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookie and privacy policy.

Copyright 1999-2024 by Refsnes Data. All Rights Reserved. W3Schools is Powered by W3.CSS.