英文:
mongodb - triger a query once a record changes
问题
在特定字段上定义更新查询触发器是否可能？
例如，假设我有一个包含人员信息的集合，可能存在家庭关系，例如：父子关系。这意味着一个记录可以指向另一个记录（一种树结构）。
每当我更新特定字段时，我想同时更新树中的父记录（如果我更新了儿子的字段，我想触发更新并更新父记录）。
是否有可能实现这样的功能？（完全在数据库级别完成）
英文:
Is it possible to define some kind of a update query trigger on a specific field?
For example, lets say i have a collection that contain people, and might have family relations. e.g : father to son. which means one record can point to another. (some sort of a tree).
Every time i update a specific field, i would like to also update the records parents in the tree (if i update a son's field, i would like to trigger an update and update the father as well).
Is anything like that possible? (being done entirely on DB level)
答案1
得分: 1
不完全是在数据库上，但有https://www.mongodb.com/docs/manual/changeStreams/和一个方便的封装器供Atlas用户使用https://www.mongodb.com/docs/atlas/triggers/。
触发器是在数据库上发起的，执行查询的逻辑在监听器一侧 - 应用程序、组件或单独的服务。
英文:
Not entirely on a DB, but there are https://www.mongodb.com/docs/manual/changeStreams/ and a convenience wrapper for Atlas users https://www.mongodb.com/docs/atlas/triggers/.
The trigger is originated on the DB, and the logic to perform the query is on the listener side - the application, component, or a separate service.
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