mongodb通配符匹配特定键的所有值 [英] mongodb wildcard match all values for specific key

问题描述

我试图弄清楚如何匹配一个键并返回该键的所有值.是否可以将值设置为通配符?我想使用值上的通配符返回该特定键的所有内容.

I am trying to figure out how to match a key and return all the values for that key. Is it possible to give the value as a wildcard? I want to return everything for that specific key using wildcard on the value.

db.collection.find({"key" :"*"})

我还希望它也将返回具有与通配符值匹配的键的整个集合.

Also I was hoping this would return the entire collection as well that had the key with the wildcard value match as well.

推荐答案

您可能正在寻找这样的东西:

You may be looking for something like this:

db.collection.find({"key": {$exists: true}})

这将返回存在键"key"的集合中的所有文档.返回整个文档.

This will return all documents in the collection where the key "key" is present. The entire document is returned.

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